I disagree with this. Once a starter is named, I believe SF, and most HC’s, go with that QB. Game experience for the starter, especially a young starter, takes precedence over giving the back up QB reps in a game. Last thing SF needs is playing two QBs in games so that neither one is getting proficient in the offense. He’ll go with his starter . Any QB would want that to happen too. You don’t want SF’s stated philosophy of ‘no fear of failure’ to be taken away from his QB, thinking that they will be yanked if they make a mistake. I don’t see that happening at all. Nope. Once he picks the starter, barring injury to him, he’ll play the season with him. You don’t want a QB controversy in your 1st year either. Play the starter all the way through and you avoid that happening.