The big difference between the two is how much damage occurs if the AI screws up. We don't have self driving fleets right now because a multi-ton truck hurtling down the freeway at 65+ mph can do a lot of damage. AI generated artwork is inert so it can be safely used as a substitute for the human generated stuff. I would expect speed of adoption to operate at inverse proportion to potential harm.

image -> text -> code -> self-driving vehicles

It's really reductive to just put all code in a single bucket, but most code probably isn't super critical for safety and it can be tested before it gets released/reviewed. I think that's the biggest differentiator from real time applications like self driving cars.