See the other reply for a half-counterexample, but the major difference is the specific software is more like generative PhotoShop, and the final image involved a lot of manual human work. Simply tweaking a prompt is not enough - again you can get copyright for curation, just not the images."
Of course AI can't be credited with copyright - neither can a random-character generator, even if it monkeys its way into a masterpiece. You need legal standing to sue or be sued in order to hold copyright.