Stop it. McDermott is likely to be fired after this year if the Bills don't win the SB (they aren't). He's an absolutely horrible in game manager, and Dorsey was used as the scapegoat (which almost everyone in Buffalo predicted would be the case).
The Bills were actually running the ball all year, and successfully too. You can go and eheck the stats, it's true. The issue was the turnovers, which it would be for any team, and then things like 12 men on the field on a missed FG that ended up costing them the game. By the way, Dorsey was fired after that game...which was clearly the fault of the HC and special teams coach and nothing at all to do with Dorsey.
Running is kind of needed in the NFL these days, yes but successfully running isn't necessarily what's needed as silly as that may sound. Just the consistency of running the ball and not allowing the defense to simply pin their ears back and go all out after the QB on pass plays is more important than actually running it successfully.
Obviously if you can rush the ball successfully it helps even more, but it's just not necessary. Check the stats for the team rushing stats. By yards per carry it's CHI, BAL, BUF, ATL, NYG, LV, SEA, CLE, SF, and JAX.
If you just do it by total yards rushing...CHI, BAL, ATL, NYG, PHI, CLE, SF, DAL, BUF, CAR.
In each of those top 10s, maybe half of those teams are even going to make the playoffs.