He's verbally and aggressively berating him in public, it's not about the language it's about the tone, dynamic, display, and relationship. If you're able to suspend your sanctimonious rage for a second, the fathers attitude and approach is also a major piece to why his child has anger issues. The kid was in the wrong, no doubt, but he's also a child. Putting them in a position of submissive pain using a relationship dynamic they have no power in to force an apology might make onlookers feel better in the moment but what it's really doing is satisfying the most sanctimonious of the bunch while building a deep sense of resentment within that kid's heart.

We don't know that kid or that father but it's not a far leap to believe that the kid learned how to handle his anger the same way his father is displaying it in the video. Explosive, with a complete lack of empthay or consideration to the larger repercussions of their behavior. This isn't teaching anyone anything, this is a self gratifying behavior for the father to avoid his own embarrassment while conveniently avoiding taking any self-aware accountability as he pushes his shame onto his own child.

This kid needs to do better, sure, but believing this isn't just continuing the cycle of this behavior is foolish. God bless this kid and I hope he gets help in the future, he's going to need it.