Why would any non-lunatic want to live in a world where someone can't import an image into software?

If only some software is disallowed, then why permit Excel but prohibit Stable Diffusion?

Can someone even look at a SD-generated image, and claim with certainty that their own art was used to train it? Any more than claiming that another artist was inspired by it, looking at their output?

I'm fine with anything goes. The alternative seems to be copyright maximalist clownworld.