I kind of feel like the problem largely lies in the fact that there are two very valid forms and purposes of review, and the review system of SH does not differentiate between the two:
- Reviews as assessment.
- Reviews as critical appraisal.
Reviews as assessment are reviews that exist largely for the author's benefit. A review that assesses the quality of the work and the technical aspects, as well as highlighting areas the story can/should perhaps be improved are all reviews that are more or less just there for the author. Not to say that a potential reader can't get anything out a review that highlights things like "syntax needs work" or whatever, but reviews that mostly focus on critiquing the story with the intention for it to improve offer intrinsically different things.
Reviews as critical appraisal are wholly different beasts. A review written by a reader, intended to be read and digested by other potential readers, are reviews as critical appraisal, and exist to explore slightly more objective aspects that aren't necessarily helpful to the author. "The main character is kind of passive, so if you prefer a more proactive MC, this story may not be for you." This is feedback that benefits a reader, but for an author who decided on a more passive character because that was the story they wanted to tell, this feedback doesn't offer anything of value.
My problem with this kind of discussion point is just by the mere fact of putting it in the author subforum, most (but not all) of the opinions here are going to be weighted towards preferring the former (reviews as assessment), because the people here are authors, and what they want is useful feedback that can help them improve (a valid ideal).
But for myself, I don't like reviews as assessment. If you have feedback for the story, leaving it in the comments for the chapters themselves feels like the better forum. I much,
much prefer for my readers to leave reviews that are specifically written in order to help
other potential readers decide whether or not to read my story. Covering the more subjective, taste-specific aspects - eg. this story is action focused, it has a large cast of characters rather than a central character to focus on, this story can get bogged down in world building minutiae, etc. - is a better review to me. Because as a reader of stories, the reviews I usually end up reading and putting the most stock into is exactly these kinds of reviews that more try to get into the detail of what the story has to offer, where it may fall short of expectations from the reader, and so forth.