I'll also add that I have no objections to kids having airsoft guns. My 9 year old (incidentally, his name is Xavier) has a TM M4 Boys and a TM MP5 Boys and a USP NBB. We shoot them quite often together.
That being said, I only support kids using airsoft when they're under direct adult supervision, and if the kids have NO access to the guns without said adults. That means, the guns get taken away and locked out of the reach of kids when parents aren't supervising. Airsoft is in far too fragile a state in Canada to let kids have guns in their posession without adult supervision.