These models produce a lot of “in the style of” content, which is different from an exact copy. Is that different enough? I guess that’s what this lawsuit is going to be about.
But artists have been making "in the style of" works for probably millennia. Fan art is a common example.
I suppose the advent of software that makes it easy to make "in the style of" works will force us to get much more clear on what is and isn't a copy. How exciting.
However, I don't see how the software tool is directly at fault, just the person using it.