1. I doubt it will have any impact on those genres, beyond what digital photography has already done. You haven't really thought those
Vogue covers were unretouched, I hope!
2. I don't see how this affects the work for those clients, unless their "disgust" is also being accompanied by an attempt to reduce your fees? Ads for
specific products, if displaying those products, are unlikely to be changed in the near term.
3. "this AI garbage" reminds me of the dismay that "proper professional" photographers had back when Eastman said that anyone (famously, even a girl) could use a Kodak.
Truthfully, generative pictures are not photos, nor paintings, not chalk or clay. They are something else, and it's up to the viewers, artists, and users to decide what they are, not hand-wringing internet posters....
vive la revolution!