I'm clearly in the minority, but Quinn is a good coach. There was a dramatic improvement in the defense when he took over. This defense has some weaknesses, but they are in the roster. Blame the GM for that.
As for the Green Bay loss, the QB gifted the Packers 14 points with 2 interceptions. You just can't do that in the playoffs against a good team. Few, if any, teams in the league could overcome that. The defense was forced into playing the exact type of game they are not capable of. Can't blame Quinn for that either.
Be careful what you wish for. Coaches make great scapegoats, but I think we all know where the true problems are.