What qualifies as AI generated? If a human writes it then has AI improve/fix it, does that count?

How do you tell which is the case?

If we don't allow AI help at all, is that perhaps discriminating against those who don't feel comfortable posting with imperfect English?

I agree in principle, but am concerned in implementation... I'm not sure we can be fair without high risk of discrimination

Edit: typo fix

Edit: or am I AI?! And making edits looks more legit.... (To be clear: I'm not, I play by rules)