Haven't properly burned myself yet. I've just avoided books based on skimming through online or in bookstores. Some had pretty clear telltale signs of AI slop (although usually quite subtle).
At his point I think that one has to assume that almost every author is using AI to some extent. And even if they don't, their editors will apply changes, no doubt using ChatGPT and other tools.
As best I can tell, the problem is contained to kindle self publishing and the like, which were always unfiltered. And we buy plenty of new books.