And that was the main reason for "modern art". A camera can do a portrait or landscape instantly and more precise than a painter, but it can't compete on abstract or imagined pictures.
Will something analogous happen when AIs takes over other industries? I have no clue, but it will, as always, be interesting to see what happens.
I like the explanation a lot, and I think the timelines line up pretty well.
But sure, it could be one of those stories that sound true, but isn't.