Right there with you. Do have to be careful though. After my daughter was knocked down trying to clear a ball outside the 18 I yelled, protect the keeper. Turned out it was one of our own girls that knocked her down.Nothing good will come from this. Dude was losing his temper and not sure that the people filming were helping to de-escalate the situation.
I know that I was about to lose my cool after watching an opposing team continue to kick at the ball when my daughter was on the ground and had the ball in her hands. Luckily I have never been filmed in my worst day, and I would imagine a lot of us would be horrified about our actions when we did lose control. De-escalate the situation. For the kids.