No new users are blacklisted.
If abuse is found, some rewards may be equalised.
It onboarder's responsibility to ensure that newly onboarded users do not abuse, not ours.
If you invite guests/kids to someone's house, you are responsible for making sure that they will behave respectfully/according to the guidelines.
Anyways, artificial intelligence is not an enemy as I can see
Only original content. If you want to use AI, decline rewards.
Using AI-generated text to pretend to be the author of it is a fraud.