> a photo of a sunset can be art ... > But if all the person contributes is a prompt, the text of that prompt is the extent of their art.
The natural question to pose is, does that mean that when the person who pressed the shutter button in that camera, that button press was the extent of their art? Of course not; intent, sensibility, timing, understanding there's something special about what's in front of you, preparing a composition, orchestrating poses, framing to create a special composition, manipulating the medium via speed or exposure or etc to create an appropriate texture... all those and more can play a part, and the button press is just the delivery method.
Millions of photos per day are not art even if they show a pretty thing, and nobody has a problem with that. Even when we actively try to capture something special, most people will later look at their photo and say "it shows the place, but it doesn't communicate anything like what being there made me feel".
So in the same way, I think the interesting discussion will be not that AI images are not art. Millions of prompts per day will not be art, and nobody (except grifters) has a problem with that. But how can AI become another vehicle for people to produce interesting art? Perhaps there's nothing special there. But I hope people with the drive to explore and the need to communicate continue giving it a shot and prove or disprove the notion that "it's just a prompt".