It's not all on the QB. Even Ameer and Rex had troubles with fumbling in their career. And some of them have been on the recievers too. I remember Marlowe muffing punts and Kenny tipping balls that were picked.
It's a thing that the entire team has had trouble with, and it's mostly a mental problem.
Tommy Armstrong is among the national leaders in interceptions. Unfortunately, he plays on the offensive side of the football in a Mike Riley offense.
Of course it's not all on the quarterback, but it's the position that touches the football virtually every offensive snap.
And this foolish Callahan V.2 offense is going to be turnover prone.....it puts the ball in the air too much.