I am not sure I see the unbundling here. AI generated art may be a threat to generic stock photography and small jobs for custom blog art, but artists higher up on the food chain now have a new tool for them to use. They can quickly generate a bunch of concepts to tryout ideas, and polish those into a higher quality piece of art than if left to their own devices.
Inevitably they started on the lower rungs and worked their way up.
If these tools displace the need for lower level/apprenticeship like work, then it won’t be a surprise if later on we have less quality artists who weren’t able to get the necessary experience early on.