Also need to understand that he was the special teams coach until being named interim head coach.
Further, he is a HIGHLY respected special teams coach, so much so that the NFL rules committee consulted him specifically when they redid the kickoff rules for this season.
So, obviously, his special teams playing well is extremely important to him as its "his specialty." That adds to that pressure as well.
But I'm with the camp that says if you're being paid high money to perform and you're an adult, you can take someone yelling at you when you mess up something, especially really badly. I was a performing artist for 25 years and I have a thick skin. I assume I'm expected to be perfect by the conductor and the audience, and will hear about it if I'm not. It's part of being a public performer, and athletes know that. I've seen enough high school and college sports coaches to figure this isn't the first time some coach has screamed at Hayball in his face.