Methinks artists are making a huge, gigantic mistake going after AI in a way that will hurt them. And by fighting for this silly "opt-out" battle, you are just digging your own grave. In case you'll succeed, AI companies will be able to claim that AI-generated art is 100% legal, hence a "fair" competitor. At the same time, you won't protect anything, because AI software allows users to train their datasets, at home, using whatever they want. So you'll have unfair competition that will crush you, and your work won't be protected anyway.