As long as they don’t actually violate copyright in the classical sense of just copy pasting stuff...
As far as we know, that is exactly how they work. They are very, very complex systems for copying and pasting stuff.
And collages can be transformative enough to qualify for copyright
Sure, if they were made with human creativity they deserve the protections meant to keep creative humans alive. But who cares? They are not humans and thus do not get those protections.