I mean, AI generated content on HN is against the guidelines. I don't know if there are more recent statements by our fearless mods on it, but this is a well-known one: https://news.ycombinator.com/item?id=33950747
So linking to an AI-generated book may not be the same situation, so technically not against the rules... but probably is against the spirit of the site, so is probably not going to be appreciated by the community.