Anyone - let alone a coach - who posts a hit of another kid hitting his one son is pathetic.
It was a late, unnecessary IBC or whatever they flagged. Move on. It's nowhere near an ugly, vicious hit.
If a coach wants to make a point about something he needs to be aware of how it looks if he uses his son at the example. There are some good things about a dad coaching his son. But it goes wrong way more then it goes well. And perception is reality in this world. So a Dad coaching should be avoided at all costs.