To some people, yes. To others, no. You’re replying to specific people who seem to be against the idea, and I’m guessing for them it detracts significantly from the experience.

At the end of the day all of the concepts we have in fantasy are derivative in some regard, so the line will vary just like it will vary for people that want to do total homebrew vs following a book.

My group dabbled with AI when it was at its peak buzz, and if I’m honest, my head cannon sort of ignores those bits. They don’t carry the same authenticity that I came to expect from my group. It detracts from my experience because I play ttrpgs primarily to learn about my friends and how they’ve interpreted a shared world, not to hear algorithmically mid fanfic. I’m also not crazy about following a book. With a book, at least I know someone willfully released the work into the world and is getting appropriately compensated.