As long as people can "clock" content generated from these models, it will be treated by consumers as low-effort drivel, no matter how much actual artistic effort goes in the exercise. Only once these systems push through the threshold of being indistinguishable from artistry will all hell break loose, and we are still very far from that.
Paint-by-numbers low-effort market-driven stuff will take a hit for sure, but that's only a portion of the market, and frankly not one I'm going to be missing.