If your idea already exists in its current form entirely, then AI is bad at it compared to cheap labor who can steal it, trace it, or mass-produce it. "Draw Iron Man in an action pose, no background", in example. You'd be fighting the AI the entire way wanting to make the image more complex, but a basic artist could easily find a comic, trace the image, steal and claim credit, and make a small paycheck.

Yep. AI is useful in this case as well, just to indicate certain features you'd like to the artist.