He was looking for the attention that he ultimately got via YouTube. I believe that such attention was more the aim than disciplining a child, otherwise we would not know about it; "punish in private, praise in public". I can see him sitting in front of his computer, enjoying his scripted work.
Don't buy into everything you see on the Internet, which also happens to be the source of most gun legends. But, such buy-in will not end here, I'm sure.
I agree. This guy responded to his daughter's immaturity with some moronic immaturity of his own. His message to her is if you don't like something then tear something up.
Disclaimer: I'm not going to say that I haven't done something equally as stupid during my lifetime, but I didn't broadcast it to the world.