Because most of them were stuck with poorly run franchises.

Crennel: Cleveland

Mangini: Jets, then Cleveland

Patricia: Detroit

Judge: Giants (Dave Gettleman era)

McDaniels: C’mon, He went 8-8 with Kyle Orton as his starting QB. The Raiders have been a clusterfuck for pretty much 20 years now

Daboll is TBC

Flores has essentially been blackballed from the league, but he did pretty well in Miami

O’Brien’s problem wasn’t a bad coach, he was a bad GM, just like his mentor