Who said that? It is not all black and white, right and wrong here. Does Cutler have a personality that rubs people the wrong way, absolutely, but that should not take away from what he does on the field.
The face of the franchise is normally the best player or the player most associated with that franchise. Megatron is more the face than Stafford, AP more the face than Ponder, etc, etc.
What do you mean is he unable or unwilling to behave in a mature way
Brady yelling at OC:
Manning yelling at Center, but if NFL Network makes light of it, its ok: