If you "probably" wouldn't do it, then that means you think what he did was unnecessary, no?
He egged his kid on to keep crying, acted insensitive towards him and the situation, offered nothing of substance to comfort him or make him understand why, and then like the douche he is, said his kid could "go find another favorite team."
So, he took advantage of his child's emotions, filmed it, offered no solace so he could keep the effect going, and then instilled in him that loyalty means nothing. But, by being a cockhead, he got his 15 minutes of fame and got in on the kid's much-deserved reward. It's was pretty slimy, and I don't see what there is to dispute about that.
Again, happy for the kids, but the dad is lame.
That dad is a total douche bag and it sucks that he got 1 ounce of anything from manipulating his kid.