Would you still call them an artist if they commissioned another human actually skilled instead of an AI model?
Why can't people accept that their role in this new process simply isn't the one we've always called artist? We don't call computers to the people using a computer, that role is now the machine's. I'd rather label the model itself an artist than its user, as much as it pains me.
I think what has happened here is that you are talking about something very specific. Putting text into midjourney, maybe. That's not the only way people use AI in their art. Are "prompt engineers" artists? Maybe, maybe not, maybe not yet. Maybe they are only as much of an artist as I was back in 2005 while clicking "generate clouds" in Adobe.
We all have to start somewhere.
You are right that this is a new process, in which a machine does work that was previously done by a human, but I don't think that means the human is not an artist. Consider the DJ, who "merely" plays back other people's records: yet there's a whole art form in weaving disparate music together. Or, consider, is a composer a musician? The only sound they make is that of a pen scratching on paper; it's not until a room full of other musicians perform the score that you actually hear any music. Yet we still think of the writing of that score as an artistic act.
I would still call them artists if they delegate parts of the work to other artists - or machines - if they're the one at the helm of the overall artistic vision.
Nope, I'd call them a patron
These definitions are distinct from the requirements for copyright.
That idea is only about 200 years old and strongly Western. The vast majority of cultures saw no difference between "art" and craft, regarding pictures and sculptures as simply decorative objects, of the same basic cultural standing as pottery or textiles. Our understanding of "art" was fundamentally transformed by the development of photography and mass-manufacturing.
Anyone with a glib answer to questions about the cultural meaning of AI-generated art really needs to familiarise themselves with the thinking of William Morris and Yanagi Sōetsu, because this isn't the first time we've had this argument.
Plenty of people use others' expressions as a form of art, (sharing song lyrics, singing others' songs in the shower, cat memes, and so on).
This, of course does not rhyme well with current copyright laws.
At this point the conversation is just boring.