It's not really a question of what it's used for, but what it's used with. Training on all the Old Masters and all public domain art? No problem. Training on

It's not really a question of what it's used for, but what it's used with. Training on all the Old Masters and all public domain art? No problem. Training on people's work posted on the internet to which they retain copyright? Not fine. Training on Microsoft's own huge codebase for their tool, and calling for voluntary authorizations from the public? Fine. Hoovering it up with not so much as a by your leave, effectively creating a license filter that sells the output as copyrightable? Well you know. (edited for tone, I get pissed about this...)