Because Belichick is a fuckwad! But he won and wins. So everyone says " Oh Bill, that wrankled ass, cut off sweatshirt with holes in it is such a trend! And we love when you shit all over the media with mumblinh one word answers because you're the best!"
But in reality, his personality sucks. He's abrasive. He makes people uncomfortable.
But he is a winner.
So he spawns these coordinator wanna be coaches that try and go hard and be dicks like he is. But those teams don't win right away and players say " fuck you McDaniels, Crennel, Patricia,Obrien, Weiss, etc"
The minute Bill Obrien started down a losing slope,the Texans couldn't wait to fire him Because he is a dick. They are all dicks.
I'll bet even Horny Robert Kraft will can Belichick after two losing seasons.
Whatever Belichick does works for him only. And all those other scrubs keep trying to emulate him and fail.
Matt Nagy says "Be You"