I imagine if he had a decent QB on the roster, he'd be playing.
Everyone wanted O'Korn instead of Speight. You got your wish, now you want O'Korn benched.
What happens when Peters and McCaffrey wind up being worse than O'Korn? Start playing walk ons? Former HS QBs? Mascots and cheerleaders?
It's pretty clear in hindsight that Speight gave them the best chance to win, and I'd have to imagine that O'Korn, right now, is better than either of the younglings at this stage of their careers.