Average rating? In a way, ratings are meaningless. It is a numerical value that doesn't reflect a measure of anything. It is not quality. It is not popularity. It is not anything!
No one really knows what it is. At most it feels like it is a vague amalgam of various things. At times, it is just an opinion of the few. At worst there literally is no rating.
It might be moderately useful if everyone who check the story would give a rating. At least it provides a reflection of what the people think of the story. Considering that authors screams foul if they receive a handful of bad ratings, it is not going to happen.
There is literally no story here that is rated less than 4/10 rating (2 out of 5 star).
As for those "underrated" stories. I'm really confused with this term. Every time I looked at those so called "underrated" stuff, they are actually rated highly or, at least, not rated poorly. The way I see it is that, they are just less popular.
Also, authors here aren't salty about the average rating, but those individual ratings. They receive a few bad ratings that pulls the average rating from a perfect 5 to 4.7 and they scream foul.
Do average ratings matter? As a measure of value? No. They practically means nothing. Individual ratings? No. They are extremely biased and tells you nothing about why. Do they mean something to other the readers? Well, yeah. They do discourage most readers from reading if the average falls too low . . . but that doesn't really matter much now because they never are low. Do they matter to the authors? Well, ratings tell them nothing. They receive dozens of 5 stars and that means what? Then when a few shows their dislike of the story by leaving bad ratings, the authors would focus on those few and make a fuss about it. It is just to show how little the authors value those 5 star ratings when even receiving just a handful of bad ones amidst dozens of 5 stars is able to greatly affect them.
Not to mention all the ratings bombings and the like.
So no. If it is possible to just turn the ratings off, at least personally; If there is an option here to make it go away, I would get rid of it.