If your opponent is behind a tree would you yell at the tree and tell it to move?
Probably not.
So why do you yell at my refs and tell them to "get the hell out of the way"!
Yeah. Yeah. I know. My refs are not trees. They are capable of moving. And, yeah. Sure. It's probably the polite thing to do before you let loose a barrage of paint past their head.
But consider the fact that the ref is working. He has a job to do. He may be standing in the "best" worst place possible in order to watch as many players as he can. Most of my refs don't TRY to be in your way. Sometimes it just happens.
Adjust. Adapt. Be flexible. MOVE!
You are one of the game's chess pieces.
Not the ref!