[ksaj]

You might bring ghost writers into this discussion.

If an AI did all the work, then it "traditionally" isn't copyrightable because it was generated algorithmically off other people's work, and not your own. A ghost writer willingly gives up their claim to their work, which surely is based on everything they've ever read before, too.

How different is that really? Definitely worth the input of a few differing voices.