I have argued this on a thread before and not quite long, but maybe I am wrong. If you are not betting on sport like football, do not bother to choose either yes or no.
Since I have been betting, I have not thought of this before. Is the referee the reason you bet on yellow or red cards?
No, referee is never the reasons I bet on Red or yellow cards either, but let me understand your point either, are you really saying that gamblers bet on card options because of the referee officiating the match?
If that's your question then, NO. I don't bet on card because of the officiating ref, I bet on card because othe league that seems brutal on their style of play. For example, I go for Italian serie A because, Italian clubs end up having many cards before the end othe games.