I don’t know. I find literary fiction tends to get lower ratings in general. My opinion is you have different types of readers, but two in general. The first type are the readers that read for fun, and aren’t necessarily “sophisticated” and sometimes just critique it based on their own preferences. Second, you have the more sophisticated readers who analyze as though they are reading it for class and rate it low based on what deficiencies in the authors writing they perceive.
One would think some authors almost don’t want their books to get popular on there because some people, like me, tend to shy away from them for this reason. that said, it’s too bad because some books that have gotten popular I read and enjoyed long before they got BookTok Famous and it may give people the wrong impression. I really liked Secret History by Donna Tartt and A Little Life by Hanya Yanagihara