It’s because they only run him on draws or misdirection plays. That’s no run game. If they’d line up in a two TE set 9-10 times a game to mix it up and actually give him a couple carries in a row he might get into a rhythm. No running back will be very effective with 10 carries a game. They just can’t get into the feel of the game at all. He should have 15-17 carries per game on average in addition to 5-6 catches. If he’s not touching it 20 times there’s a disconnect in the offensive scheme. He’s too talented and versatile not to use. They get WAY too one dimensional and abandon the run too quickly. That’s on the coordinator and the QB.