Easy 10
Brain dead MUG SHEEP
Pretty much what happens in cricket now. However, the players prefer to have the final decision as the correct one and the Decision Review System places umpires under scrutiny - I'm sure someone is keeping a chart of how many decisions get overturned for each umpire - they can't be right all the time.
So why not the same for football refs and linos?
Because it leads to over-dependence by officials. They'll check decisions "just to be safe", meaning the celebration of taking a wicket is often on hold while the decision is referred.
I've seen umpires referring to a replay for run-out decisions where the batsman is a MILE out of the crease. A standard decision could and should quite easily have been made, but because they have the safety net of a replay, they'll postpone the decision and instead of celebrating, everyone has to wait around for someone upstairs to decide.
That would be proper RUBBISH in football, waiting to see if the goal should stand or not.