Lets look at it from this perspective. The guys in the locker room are 18-22 years old, and sooner or later, they are going to turn on Crompton. Put yourself in their shoes. Wouldn't you get sick and tired of playing close games carried by your defense, but manage to lose them due to coaching and QB play? I know I would, and the players are going to start taking their frustrations out in the locker room. Sooner or later, given that Crompton is still the QB, the offense and defense are going to stop playing with the intensity we have known them for. (The Defense mainly.) How can you put your heart and soul into playing the game when the QB is inept, and the coaches won't do anything to make this facet of the game better?
Also something to keep in mind are the recruits. I doubt they are going to come to UT knowing that they are going to play mediocre football.