First, you didn't address my point that you cannot detect AI output.

I already have Stability running on my PC. I generate an image with it. How do you know the output comes from Stability? Answer that, please.

Second, a worldwide draconian ban on AI image training and generation just isn't going to happen. Very few legal things are coordinated worldwide, and copyright law is incredibly low on the list.

Even training without consent can be addressed. Google trained some of their AI from Google Photos. Which they made free for unlimited use so that us fools would produce billions of images, accept the terms we don't even read and voila: AI legally trained.