If he’s mad at that wait till he sees what the cp command does! In all seriousness, midjourney is like any other tool. You can break the law with it, big surprise. It should still be on the person that broke the law, not the makers of the tool. If you go down the “can’t use my art as training data” how far do you push it? I watched Batman, does that mean if I draw caped super heroes I am stealing training data? Would…
Oh, wait. It isn't the user. Spotify and Midjourney are actually the guilty party in this scenario, for distributing copyrighted works and probably for storing them without permission in the first place.
Midjourney may be a tool, but it is a tool containing a large body of copyrighted and unlicensed images, including trademarks, and even illegal content. And that is what the court cases are going to be about.