I'm not sure we've learned much about AI specifically.
There have been a number of studies done on using AI to assist writers. There's some evidence that it helps less-skilled writers do a better job. I don't think that AI's anywhere near the point where it can really replace writers. I think that was being talked about, but I don't see any evidence that it's about to happen or can happen. My own experience—and the experiences of a whole number of other people who have tried to do writing with ChatGPT or whatever—is that there are some huge limitations on using this technology at this point.