They want AI image generation to go away. That isn't likely to happen, but their best hope would be to make copyright claims or try to turn the public against AI companies with accusations of misappropriation. Adobe's "ethical" image generator would be immune to those claims while still doing nothing to address their primary concern, the economic consequences. It takes away their ammunition while leaving their target standing. Are they supposed to like a company doing that or does it just make them even more upset?