Because refs are a protected species and of course are never wrong. You can't criticise them, you can't "show dissent" towards their calls or its a card, and soon enough players won't be allowed to talk to them unless they're the captain. Every year they are given more and more protection, and at the same time they are never, ever held accountable for the woeful refereeing that gets worse every season. And it certainly doesn't help that they're power tripping cnuts who love nothing more than having their name in headlines and think people tune in to see the ref.