My sister is a somewhat well-known novelist who writes under a pen name. She does signing events, has fans, the works. But its mostly written by Ai. Apparently, the people "reading" and reviewing books are also Ai, affecting your marketing and distribution reach just like it does on any other platform.The result is that the more Ai content you use, the better your author rankings will be, because bots love nothing more than reading what other bots wrote. She will say something like, "Describe a beautiful ballroom" and then just go in and manually edit whatever it produces. She is not alone among the bestsellers who do this. When you hear of high level college plagiarism cases, this is why: they are using software to write their theses. Writing assist software has been around for a long time... I'm looking at you, Stephen King.
The best way to handle this, I think, is to stop reading occult books. Pick one or two books that you feel have substantial content, and just quietly forget anything else exists. If you pick up Liber ABA or the Necronomicon and just say "OK this is IT," you will be fine. Scouring every new title for some previously unseen secret leads nowhere even if the content is well sourced and human generated.