It's not about copyright, that's a burgeois invention. It's about attribution and alienation, with AI the act of working (creating the images that feed the neural network) is completely decoupled from the product (whatever the giant heap of linear algebra cobbles together). That's the issue, not some capitalist's loss of rent-seeking opportunities.
This is what happens when people don't actually read any theory, they think that capitalists working to steal work (art) from workers (artist) is anti-capitalist