Absolutely nothing, but as has been pointed out several times in this thread, OP comes off as being judgmental about the books and readers. The fact that they asked the question and bounced without any discussion makes it seem even more judgmental.

And if we are being honest there are thousands of books that are much worse than the examples mentioned. People like different things, it isn’t a wild concept. 🤷🏻‍♀️

Sometimes people want to read purely for entertainment and escapism. Why is that a hard concept to understand?