Feel like your 2 points conflict with each other. You can't "Start slow" and also "Cut bloat." The slowness is the bloat.
If you don't have a good hook at the start, you'll lose people. Stein's Gate has him find a dead body and engage in time travel incredibly early. Light gets the Death Note pretty quickly. Hunter x Hunter begins with him being saved from a monster and then going to hunter school. Harry Potter is weird from the very beginning. I'm not a big Percy Jackson fan, but I'll bet their plot gets going really fast too.
All of these things have an initial "Hook" incident, then a very short lead-up to getting back to that central idea. None of them take it slow.
The reader does not need to be invested in your world. They need to be invested in your story. Your world can be a colorful, well-realized, and clever bit of worldbuilding, but I won't give a shit about it if I'm experiencing it through a character who is just sitting around twiddling their thumbs.
I think you are misunderstanding what I mean by start slow. I meant to introduce important things before picking up the pace. In the first episode of Death Note we get an introduction to Light and the Death Note, in the second we are introduced to the reaction of his actions and L’s first move, etc. It takes ~6 episodes for L and Light to meet, and that is when the back and forth, imo, between the two truly begins.
Hunter x Hunter starts fairly slow, although I read the manga and watched the 99 anime until the end of the Hunter exam arc, so I may have a different experience from those who have only seen the 2012 one. It starts with Gon in his village. He yearns to become a Hunter like his dad. He meets Kite who sets him off on his journey. He goes onto a boat to get to the exam. He meets Leorio and they have an episode together, the same goes for Kurapika. If I am remembering correctly, I believe they have a couple of episodes traveling together as they search for the exam location. When they find it the exam begins and introduces all most of the important characters for the upcoming story. Hell, imo, the rising action truly starts after the Hunter exam shortly before the introduction of Nen.
Harry Potter has a chapter introducing Harry and his hardships before he is slowly introduced to the wizarding world. After you get a framework of what will happen next, you are introduced to Ron, Hermione, and Draco. Then they get sorted and the rising action begins shortly after.
Percy Jackson’s first chapter is the hook. He goes on a museum visit and sees his teacher turn into a monster. He manages to kill her. In the next 2 chapters it introduces the world around him, he is confused about why people don’t remember said teacher. He starts failing school, he sees three strange old women, and we are introduced to his abusive step father. At the end of the third chapter we are pulled into the more supernatural part of the world, but the rising action has yet to happen. He gets to the camp and is injured. The next 4 chapters introduce the more supernatural elements of the world, the camp, important characters, all as Percy gets aquatinted with his abilities. This culminates in the 9th chapter where the rising action starts.
All of these start slow by introducing each/most, important characters for the upcoming story/arc. All while dropping hints of what will happen next. In these stories this happens multiple times, the introduction of the chimera ants, the beginning of the next book(s) for both Harry Potter and Percy Jackson, and the introduction of Near and Mellow. It is funny how the one that rushed itself, Near and Mellow, is seen as where the story fell apart. Near and Mellow were not really fleshed out when compared to prior characters leaning hard on the reputation of L rather than flushing out their characters. Things happen fast with little reasoning,etc. I think we all know the controversy over the ending arc of Death Note.
All this is to say is that, if readers do not understand your characters, the world surrounding them, and the stakes of the story to those characters, then the story loses out. This doesn’t mean you need a full background of each character before starting the rising action, but that there at least needs to be the basic first date stuff, filtered out for what is important to the story of course.
As for cutting bloat, it means asking the purpose of each scene/chapter, why this should happen, what this effects, and if it makes sense to cut it or a way to convey that scene better. We arn’t screenwriters, probably, so we don’t have to be as rigid and efficient as they are, but it is important not to go on 100 page diversion about the battle of Waterloo if it has no importance to your story. Put most basically cut out the filler when necessary, I do however acknowlege that most people here write serialized stuff and may need to push out chapters because they are paid by the word, or that they need to update regularly and their next important arc/chapter is not complete and they need a chapter or two more of filler to finish it.
Of course these rules are not absolute, but I do believe that it is a good starting point.
1. Starting slow is a good tip for writing and building a good foundation for a story but a very bad one in terms of marketing for web novels. Authors, especially Chinese authors, want to catch the readers to continue the series. It's kind of like axing mangas in a sense.
The examples you gave don't apply to web novels. Stein's Gate is a visual novel game. If someone plays a game that they bought, they won't just quit after a "boring" first few minutes (Stein's Gate really is slow). They already bought it, so they'll play it, and then they'll get hooked on the good bits further ahead. The same thing happened with the anime. It was released per week and got people saying it was boring the first few weeks. But then it got completed, and that was when it became popular mainstream.
Togashi was already famous long before HxH, so readers are willing to try HxH. Of course, it turned out great. Monster (one of my favorite manga/anime) is really slow, and it's not mainstream famous as far as I can tell. Harry Potter and Percy Jackson are books. Same logic as Stein's Gate.
Look at the views of chapter one and chapter two of any web novel. There's always a sharp drop-off from the first to the second, and second to third, etc., then it levels off. For a web novel author, they need to front-load the first few chapters to stop readers from clicking away. In contrast, someone reading chapter one of Harry Potter (or any book) usually isn't going to throw it away after one pass.
By the way, I write slow-start stories, so I'm very much aware of how it goes by comparing my experience with other authors who do follow market trends.
2. The bloat is another symptom of the problems in the web novel industry, Chinese more so. They're getting paid by wordcount and they have contracts to release daily or something like that. They could go 3k to 8k words a day, even 10k. At some point, they'll just have to make up shit to reach that word count. That's the Chinese system, and that sort of bleeds to english writers too.
The way RR/SH works, you'll get more visibility by spamming chapters. If you can go daily, then it's better. And that's just for visibility. Those with patreons offering tons of chapters to get gain more patrons have to shit out those word counts because that's already their job. I know many authors (through chatting with them to discord) who suffer from burnout, but they can't stop. That's already a way of life. (I don't keep a fixed schedule by the way, and that's a huge minus to readers).
And this isn't just isolated to web novels. Web toons also suffer from this, with readers demanding more and more as a story becomes more popular.
Essentially, a web novel writer will more than likely bloat their works the more they get popular. Taking the time to slow down, plan out, make several edits, etc., are detrimental to success. You can try looking for the guides of big web novel authors about how to get big and they'll say editing is not worth the effort at some point, along with other tricks like spamming chapters, etc.
I mostly agree with the second point, but I think the 1st point is a bit to harsh on writing slowly. For example Death Note was the first work of Tsugumi Ohba (at least to our knowledge), YuYu Hakusho also started off fairly slow, and if you want an example of a serialized episodic comedy that starts off slow, you need no further to look at Saiki Kusuo or Gintama.
Valid points but its kinda limiting.
A slow start is just one way on how to get your readers interest. A fast paced start that is jam packed with action would also work wonders if executed properly.
When writing scenes, it is good to have a purpose but it doesnt have to always be for the plot. Writing scenes can be used to establish your characters, well, characteristics. This doesnt advance the plot but it makes your characters feel more alive. If you just use scenes to advance the plot, your characters would lack depth.
It just all comes down to how well can the writer take advantage of pacing as well as story telling to give life to their work.
Yeah, to an extent, something more fast paced that starts with the rising action, like Terror in Resonance, can work. The issue is that it can easily become harder for the readers to connect to the characters in the story if it doesn’t simultaneously tell their stories. Which, at least imo, will make it harder than the first method of taking it slow before starting the rising action. Think Tokyo Ghoul rootA for how this can backfire when not done right.
As for your second point I completely agree, as long as the scene flushes out the story it is probably not unneeded. Unless of course if you go off talking about how Jenna’s Grandma’s Cousin once gave her a flower, and why that was important to Jenna’s Grandma’s Cousin who we only meet once in a flashback. Once more I am looking back to Hugo’s Les Miserables and End of the Magic Era as almost perfect guides of what not to do when it comes to bloat.