The obsession to get the decision 'right' seems to be driving this. Doesn't matter how long it takes "as long as we get it right in the end." Problem is, they're not getting it right.
IMO, we're forgetting that this is a game played and administered by humans, and humans make mistakes. The players, the coaches, the NRL and yes, the referees as well. Sometimes we just have to accept the call.
Sure, we can yell out that it was a rubbish decision, as is our right, but in most cases we move on knowing that these things tend to even out over a season.
Unfortunately, in this quest for 'perfection', we're only making it worse. The video angles aren't always conclusive, the use of slomo is unrealistic and the video refs are prone to human error as they make subjective, arbitrary or even biased decisions.
In the meantime, the game stops, people get frustrated and some head for the exit gates or change channels.