If you are coaching a team and you run the ball on the one yard line and it doesn't go in, there is a school of thought to say 'we should be executing this play, so we try again' . During the week they can address the fact it didn't go in when running up the middle, good thing is they scored on the drive. In the same way that Allen can improve, if they can improve these runs up the middle then they will get better as an offence.
If your number one in red zone offence in the league then your OC is doing well. That's a playoff caliber strike rate when in the 20.