The murdered are gone, and the raped are at the theaters, watching it, and experiencing it again. This is cruelty in the name of entertainment.
He's right there's value in making the issue visible. But if he was really concerned, he'd think about it deeper, and maybe ask the opinion of related associations, weigh the pros and the cons of inflicting psychological harm.
No, I think it's just that he likes the beauty of evil. It's just a tool in his box to make mature art for mature people who are beyond superheroes, and beyond good and evil.
But he's an artist, and I don't blame him. (I blame Obama)