Fair enough. I don't call it "slop" unless it is, and slop can certainly be made without involving computers. But genAI has without question made slop very easy to generate and so we're seeing quite a lot more of it these days.

I'm just saying why genAI art, sloppy or not, is of no interest to me and why I get angry when I've been deceived about it. Watermarking, if it were possible to reliably do (which I think it isn't), would solve that particular issue by making deception impossible. Without a reliable signal, a lot of stuff made after a certain date will inevitably and necessarily be suspect. Not saying that's right or wrong, just that it is. Maybe think of it as the audience being self-protective.

A reliable signal might even make acceptance of machine-generated art easier, by eliminating or reducing the chances that people will feel tricked.