Goodreads is perhaps the best example of enshittification imo. It’s only good now as a way to track your reading lists.
I tried bookwyrm today and it feels quite polished already, like giving you a guided tour of it’s features. Hopefully it takes off as well similar to mastodon and lemmy.
Books, music, movies and so on all have big differences in how they’re best presented, what sort of information they should have, how social features are best integrated. I don’t really see a monolithic site that tries to do all of that being better than separate federated sites that can cater to their own unique focus.