Exactly. At first glance it can spit out some really impressive stuff, but turning that content into a coherent piece of artwork still takes imagination and skill.
I can’t draw very well, but I’ve gotten good at compositing and image manipulation over the years. SD is amazing, but it doesn’t mean that I don’t spend hours and hours piecing together an image to be the way I wanted it.
Stable Diffusion loves VRAM. The larger and more complex the images you’re trying to produce, the more it’ll eat.
My line of thinking is that if you have a slower GPU it’ll generate slower, sure, but if you run out of VRAM it’ll straight up fail and shout at you.
I’m not an expert in this field though, so grain of salt, YMMV, all that.