There is nothing liberal about it. It is unsportsman like to stand a couple of feet from a person and smack them as hard as you can in the face with the ball.
The object of dodgeball is to hit the other person with the ball. It is not to maim them.
To quote Ronald Reagan, "There you go again." Making up facts to fit your theory. You might make a good fiction writer, but debaters should stick to the truth.
Nothing in the story about the adult getting maimed. He got his glasses knocked off. If anyone got maimed, it was the kid that got kicked in the 'groin'.
And if you think that a kick in the groin is the equivalent of getting your glasses knocked off, you are obviously not a man.