Your logic literally applies the exact same to ai generated art. It’s quite clear you haven’t even tried it if you think that the artists are just asking for an entire image and then saying “all right. I’m all done here”.
Listen. I don’t think ai art should have a copyright either, but it has absolutely nothing to do with the logic you’re coming up with. Control net (or even just basic Adobe Photoshop now) allows anyone to do exactly what you are saying a “real” artist does.
Recent science has shown what they say to not be true. PTFE can even off gas without being under heat at all. And even if it was true, you’re still increasing demand for something that causes an insane amount of environmental damage and the factories do cause a significant amount of PFAS to get into everyone’s bodies.