Are you saying that a ref calling a hold PD or illegal, using the correct interpretation of the rules, to "look smart" is a bad thing? If the call is the right one, I can't see how it is bad. I like looking "smart" as an athlete, as a coach, or as a ref. As long as the ref is making the correct call, I don't see what is wrong with "smart." Perhaps an example (real world) would better explain your position?