Earlier quoted context omitted.
What happens when the PR is clear, reasonable, short, checked by a human, and clearly fixes, implements, or otherwise improves the code base and has no alternative implementation that is reasonably different from the initially presented version?
If you're going to set a firm "no AI" policy, then my inclination would be to treat that kind of PR in the same way the US legal system does evidence obtained illegally: you say "sorry, no, we told you the rules and so you've wasted effort -- we will not take this even if it is good and perhaps the only sensible implementation". Perhaps somebody else will eventually re-implement it later without looking at the AI PR.
Like, this should be enshrined as the quintessential “they simply, obstinately, perilously, refused to get it” moment.
Shortly, no one is going to care about anyone’s bespoke manual keyboard entry of code if it takes 10 times as long to produce the same functionality with imperceptibly less error.