I agree with you, I'm just laying out what I believe the real ban that makes the most sense would entail. It does sound like they dont even want to hear that you used Stack Overflow if it came up from Google's Instant Answers AI thingimabob.

> My point is, if projects are actually serious about banning AI, write that down in enforceable language.

You're under the false impression that the maintainers of a project are obliged to follow the same standards as a court of law.

> if you're so convinced that AI contributions will ruin your project, you owe the world a full and complete definition of what "AI contribution" means

False.