I don’t know Saban personally. I have watched him take excellent care of a boy who graduated from high school with my son. Saban’s bullying is nothing like what my son has endured as a US Marine. My son and his friend who plays for Saban (a zero star high school player to a young man whose name was called on national tv two days ago) are both fine young men.
You don’t need to know Saban personally, his rants are easy to find. He’s a screamer. He’s smart enough to realize that in this modern world you can’t scream at the players anymore, so he screams at the coaches. He’s a walking temper tantrum on the sideline, any missed play, no matter how much they’re winning by, can set him off. And apparently he’s much worse in practice. He’s a jerk and a bully, the footage is all over youtube.