I'm with McVay: injuries and weather can't be excuses. Not if you want to win a Superbowl. Raise the standard.
I'm not buying the weather excuse at all. We were 10 yards away from scoring 29 against the Eagles in the playoffs in very severe weather conditions with the snow. So cold and rain aren't sufficient justifications for 20, 21, 12 and 19 points - Eagles, Saints, 9ers, Jets respectively from weeks 12-16.
BTW, they scored 21 points against the Saints. That would have been ranked 21st in the league if they scored 21 every game. That's not acceptable.
The way the team was designed - league's most expensive offense, least expensive defense - they were supposed to score closer to 27 points per game or more, get early leads, and allow the pass rush to get after the QB.
That didn't manifest and we shouldn't be ok with it because I seriously doubt that McVay is.