some of the examples chosen to prove the point are silly.

Mariota didn't run "much" sure, but part of that is the fact that he's a legit homerun threat every time he does take off. A better piece of evidence would be Oregon's demolition of USF in Kelly's first season as OC when the Ducks were forced to rely on the services of awkward and lanky Justin Roper at QB. That guy had no explosion and took forever to get moving, but all he needed to do was get 5-6 yards once or twice to keep the defense honest, and Chip dialed up playcalls that ensured there would be open space for Roper to run into in the event that he did pull the ball.