I have no issue with tough coaches. My son is who he is because of great coaches in his life and they have been very tough. But for 18 years he learned what was right from wrong from his parents because it was our job to teach respect.
But in my opinion this coach was way out of control. What he said was not necessary and doesn't necessarily make better young men. A loss is ultimately the coaches fault, get rid of the players who are the problems. And don't promote violence.
These days, coaches pretty much keep themselves in check, they don't want to lose their job over something they said. You have to be careful.
JMO