Some of the details aren’t exactly correct. But some of them are and are extremely indicting of Garrett and Kellen who were trying to use (the only offense they knew) a Coryell offense that required specific player types and especially constant motion, play action, and personnel groupings/formations - that they didn’t have. So why push a system that you really can’t use correctly because you don’t have the parts? Again. It’s all they knew. McCarthy hated Garrett’s playbook. In one of the press conferences following Kellen being let go, he barked, unprovoked, at the press “this is not Jason Garrett’s playbook”. He went onto say that playbooks change over time. So logically Kellen WAS usually Garrett’s playbook and McCarthy was trying to change it. He couldn’t while Kellen was still calling plays. The Coryell scheme is the only scheme Kellen knows. (He was even named after Kellen Winslow).
It starts out like a good idea but the incumbent stays in power and weakens both. Doug Marrone and Nathaniel Hackett locked themselves in a room for days to create a pro version of the Syracuse Coryell/WCO but they failed. Schottenheimer kept the same language of the WCO and put in Coryell plays in order to go in a Coryell direction. Why was he fired if he had all of those stats? Losses, lack of change, adjustment , creativity later in the season. Sound familiar? It’s Garrett and Kellen. It’s the flaw of the Coryell scheme. It sounds so good but without ideal players and especially innovation to get those players optimized, the scheme is Hue Jackson, Cam Cameron, Jack Reilly, Mike Tice, etc.
But the best stat is the Super Bowl. Count the number of teams that had a pure or heavy Coryell influence who won the Super Bowl or even were in the Super Bowl in the last 20 years.
Bruce Arians won with Pittsburgh (largely because of the defense) and Tom Brady modified Arians offense with the Bucs. Now count how often the WCO makes the Super Bowl and wins. And before you start arguing Erhardt-Perkins, the foundation of Brady’s success was the short pass which caused Steve young to comment “the Pats are running a West Coast offense”.
All this to say McCarthy is keeping long passes but making a WCO because that’s what works.