The concerning and historical issue with a fall competition is that it leads to quick trigger from staff to pull starter.
Haven't seen that IMO. We watched lots of Jantz turnovers week after week and finally it was just too much and too painful. Last year we played a banged up Sam Richardson forever and a day before we even put in Rohach.
I am a Sam fan and hope he wins the QB battle because IMO he gives us the best shot to win. But if Sam plays the whole first half and can't hit even the simplest of passes, is fumbling, and throwing interceptions left and right, then in the second half you play Grant and give him a shot at a series or two. IMO, Sam will have played so terribly that he has dictated that Grant gets another shot. If Sam plays even reasonable then he continues to get playing time.
But I don't just blindly leave him in. For example, Jevohn Miller played atrociously against UNI. First 3 UNI possessions resulted in TD's which pretty much meant the game right there. Burnham replaced Miller with Luke Knott. Maybe you think that shattered Miller's confidence. IMO, it HAD to be done. And we might have waited too long but we gave Miller his shot. Now he has improved and playing better. So maybe that motivated him to work harder and learn more.