I see no problem with AI-generated books existing, but as is the case for any books it has to be possible to review them and evaluate their quality in the proper context.
I used to be a pretty active Goodreads librarian but that site has really gone downhill over the years. It had potential but it's been largely squandered. Been thinking of looking into Bookwyrm but I'm worried it's actually good and will suck all my free time away again.
It becomes a problem, if a) the market gets flooded with these things. Especially if they are pushed by a bot cartel and b) known, real author names are used, in order to increase the impact.
As long as their quality can be evaluated I don't see the problem here, people won't buy the crappy ones. That's the main reason why there's a problem with them reusing an existing author's name, it makes evaluating the quality harder.
This is a valid point but Amazon also sells a lot of books based on pseudo-science and debunked claims. It's pretty clear they are not an ethical company so they absolutely will do nothing to stop AI generated books.