The real job losses are probably in commercial art. If you're making an illustration for an ad, that's almost certainly automated now. Looking at when the decline started, it's about when Stable Diffusion got going.

Some of this stuff is pre-AI, Photoshop smart tools stuff. Especially clothing ads. Nobody has a live model pose with each item color any more. Or even each item. (I used to know actress/model/waitress types in LA who did that. Grind job: "OK, the blue sweater is next, and hurry it up, we have 50 to do before lunch". But it paid OK.)