Thank you for this overview. And still I'm sure AI won't kill any jobs. It will support artists (if they want it). Sure, it will reshape the job landscape and create new jobs, like prompt designer.
After all it will be humans, who 1) operate AI systems, 2) select the best results, 3) connect them into one piece of multimedia art (be it movie, series or something other).
And then it's about public, who will appreciate (or not) AI created pieces. It's like with stop motion and clay animation, which was so popular back to 1970ies. Then CG came, and rendered animation became more efficient, and still many people appreciated manually created clay animation.
How ever efficient a movie is created, it will fail if public dislikes it.
So I advice to artists to not fear of their future but to experiment with new tech - or just to do their thing. AI is here to support, not to kill :)