I've written a lot in my life so far, including books and novels, and never used AI for it. I don't see the parallel. If you were right and it was the same as plagiarizing, then the use of AI should be prohibited entirely. However, to me it appears more akin to using tools like spell checkers, CAS pocket calculators, and Grammarly. It's another tool. I don't really get the fuzz people make about AI. I'm also fond of judging the content of texts regardless of the author. Has that idea come so much out of fashion?