Interesting article. It was obviously one-sided and was surely written by someone who was never the unathletic kid in a dodgeball game.
I see their point, but you could just as easily argue that the kids who don't have the athletic ability to get their own back in dodgeball could find another avenue to vent this, such as getting a gun and shooting their classmates and teachers.
Incidently, we were never allowed to play contact sports or anything like dodgeball at school, and looking at that I would have to say that if they need dodgeball to stop their kids getting into violence then they've got a lot more worries than the P.E. curriculum.