I'm a lot less quick to jump on the Bills or McDermott than most here.
But that take is utter garbage.
Hopefully he's just saying his usual cliche stuff, I mean, if he knows that he needs to take over playcalling duties and then does it successfully, then he clearly understands how much strategy plays a role in NFL games.
That doesn't mean people are wrong to worry that he takes it too far in other important aspects of team-building and game-planning.