> It's the same thing humans do with their own art.

How so? Humans distributed all those "I filtered them out because they were too obvious" AI ones that aren't in the test too. So they passed someone's "is this something that should get released" test.

What we aren't seeing is human-generated art that nobody would confuse with a famous work - which of course there is a lot of out there - but IMO it generally looks "not famous" in very different ways. More "total execution issues" vs detail issues.