@jamie Hmm... this sounds like it's saying is that if a work (e.g. a code base) includes AI-generated content and doesn't identify which parts of it were AI-generated, the whole work and every part of the work, even the human-created parts, become ineligible for copyright. I believe that's wrong. (Maybe misleading, at best, if you meant it in some other way.) I mean, I can't say so authoritatively, since I'm a copyright nerd, not a lawyer, but I'm becoming increasingly convinced the more I look into it. If nothing else, it'd be a quick way to invalidate anybody's copyright on anything by just combining it with some AI-generated content and releasing the combination.
I think a more accurate statement would be that if you fail to disclose which parts were not written by a human, the copyright status of the work is unclear. The human contributions are still copyrighted by their authors, but there are some things that can't be done with the work as a whole without knowing which contributions those are.
(but true)