That isn't really a rebuttal of my statement. It's not even particularly salient. Sure your average person might like AI writing and not be able to tell it from human works — just like they can't tell the authenticity of a photograph of Aunt Margaret from a photograph of Trump meeting an alien from Rigel IV. But there are plenty of people who can, and so anyone trying to pass slop off as their original work will be discovered. It's just a matter of time.
That being said, I use AI quite a bit in writing stories — though it's more like solo roleplaying. I don't think it's particularly good at all, but it does while away the hours sometimes, as long as your expectations are low. I can't see anyone who enjoys reading being enamored with AI. My wife reads over 300 books per year, and she spots it pretty easily.