I don’t see this as a claim that the AI is doing art. He’s just saying, that the art can be created at low incremental cost.

Like, if we were in a world where only pens existed, and somebody was pitching the pencil, they could say “With a pencil if you want 2x or 5x or 10x as many edits, it's an incremental cost, you can explore ideas and make changes without throwing the whole drawing away.”