I think it is sad that they're, in a way, making references to rape frivolous. But, in fact, I must say that violence in games is a great way to vent off your day-to-day frustration. When I was younger, it helped me lots. I don't mean it will help everyone, of course. If you consider that the following titles use lots of swearing and violence, and came and went from the shelves without much fuss, this one won't be a great deal as well:
Fallout Series
GTA Series
Bully
Duke Nukem (even contains a bit of nudity and rape-theme)
The ignorance of the parents regarding what they children do is, unfortunately, caused by their lack of proper focus on their kids. I can't say I was a wondrous child, but, after being born in a catholic home, and being left unnatended while playing violent games, I can't see this as neglecting their parental duties. Many parents - such as mine - wouldn't be able to understand how to prevent me from playing those games, especially because I would go to the shop and buy/choose them.
I consider myself rather ok for a violent games fan; I even traded violent gaming for linux installing and computer maintenance on a regular basis. I would only remove the rape 'apology' from those games and move on.