Why are so many coaches stupid enough to shout at referees?

Games 45-51, 2023-24

I've been a referee for 15 years, a coach for almost 20. One thing I have never understood: why on earth, as a coach, would I scream at a referee?

In my role as a referee, this is what I see when a coach starts jumping up and down on the sideline, waving their arms and screaming about some decision or other: a dickhead, an arsehole, an idiot, a moron, a twat. Someone who knows fuck all about football. Someone who should absolutely not be in charge of a football team, especially a youth XI. Someone with a chronically warped perspective. Did I mention arsehole?