It will become too inconsistent. How do we truly determine when a person uses an AI or when he did not when there are so many exceptions?
In a discussion, I see no use for AIs. AI can be used to do research and learn, but the point of a discussion is to say what you know or ask questions about things you do not understand. The point of a discussion is to state your opinion and last I checked, this is still a discussion forum.

When people educate by making a topic, they do that on things they know and include links to sources they quoted so people know where it came from and also read more on it if they want to.

In my opinion. the rules against or for AI should stay the way it is for now. Using AIs for research purposes is the best way to use AI in this regard. You can use it to compare and contrast other data you're researching.