He was fired 2 years ago after a disastrous 5 years with the Rams, and in a league desperate for HCs that can get a team over the top, he is passed by after making it crystal clear that he'd like another HC job. Has anyone even heard of him getting an interview?
That ought to say enough about what Team Presidents, GMs and Owners think.
And, I'm guessing that the memo at the bottom line of his unemployment check probably mentions something about 7-9.
Seriously; the game he knows isn't the modern game. And his main motivation technique seems to be saying a lot of bad words and sporting a Cheshire Cat grin all the time.