People act like these rookie Quarterback are small children afraid to get their feelings hurt. I totally understand what you are saying, but the line is playing much better than everyone thought and half those sacks are on Allen himself. The Bills screwed up the QB situation majorly, but now they have got to roll with it and BENCHING Josh Allen is going to hurt his confidence way more than getting dinged up and knocked around a bit.
EDIT: The only way I would be in favor of Derek Anderson taking over is if Allen can't play this Sunday and Anderson absolutely lights up the Colts. And that's ONLY because I really don't want to squander this defense and Kyle Williams last year as a Bill.