When there's personal accountability for mistakes, fewer get made. Keep your eye on the ball. Or, a place for everything, and everything in its place. There are a few narrow areas where appearance ethics are appropriate-for judges, and baseball umpires. But in most other cases, we need to focus on substance and motive.
Responsibility is for everyone.
This means the accusers must be as accountable as those they accuse. False accusations should yield negative consequences for those who make them. Don't call virtuous people chumps. One of the most destructive aspects of modern ethical thought is the notion that anyone who fails to take advantage when he or she can is, well, a chump. If you focus on appearances, you will fail even at that.