I don't like to frame it in terms of, "this person is using AI, so I am no longer interested in communicating", because it is not really the AI that is the problem. It is the lack of effort put into communication with another human. AI can be extremely helpful for some people (e.g., proofreading text if one's native language isn't English). But this use case is almost never a problem if done carefully because the original ideas were all there in the beginning.

I focus my frustration on writing that is circular, vague, unnecessarily explanatory, etc. In my experience this is a symptom of the fact that there were no original ideas to begin with.