Their placement of books. Their aesthetic. The collection of cool things to put into a scene to make it interesting. The lighting. Not yours. Not from you/not from the AI. None of it is yours/you/new/from the AI. It's ALL based underneath on someone else's work, someone else's life, someone else's heart and soul, and you are just taking it and saying 'look what I made'. The equivalent of a 4 year old being potty trained saying 'look I made a poop'. We celebrate it as a first step, not as the friggen end goal. The end goal is you making something uniquely you, based on your life experience, not on Bob the prop guys and Betty the set designer whose work/style you stole and didn't even have the decency to reference/thank.
And your prompt won't ever change dramatically, because there isn't going to be much new truly creative seedcorn for AI to digest. Entertainment will literally go into limbo/Groundhog Day, just the same generative, derivative things/asthetics from the same AI dataset.