That's not at all what that says. Did you read it? It specifically says that rh copyright office would have to judge whether the art is a mechanical reproductio

That's not at all what that says. Did you read it? It specifically says that rh copyright office would have to judge whether the art is a mechanical reproduction, or whether it originated from a humans "own original mental conception" and thus "is necessarily a case-by-case inquiry." That's the definition of ambiguous.