That's the most succinct way I have seen someone put it, thanks! It's really the same issue, no matter if it's software, online comments, e-mails, artworks, homework, etc. We engage because we expect to be interacting with the output of another human being. AI fundamentally betrays this expectation.

I think any such contract would have died with the first propaganda, or deliberate framing to advance an agenda.

I think assuming a writer had your best intentions in mind has been unwise for quite some time. Murdoch built an empire exploiting this assumption.

Precisely. In the case of OSS it makes no sense for maintainers to spend more time reviewing AI generated code than contributors spent prompt engineering it. That's just not helpful.