Earlier quoted context omitted.
It should be the responsibility of the person submitting changes. The problem is AI apparently makes it easy for people to shirk that responsibility.
Trusted contributors using LLMs do not cause this problem though. It is the larger volume of low-effort contributions causing this problem, and those contributors are the most likely to ignore the policies. Therefore, policies restricting AI-use on the basis of avoiding low-quality contributions are probably hurting more than they’re helping.
Without that policy it feels rude to ask, and rude to ignore in case they didn't use AI.