Replays in Rugby League of incidents that have not been referred to the video ref are often shown - irrespective of whether the right or wrong decision has been made.
You may well be right but if the players knew it was quite likely that a replay would be shown then their behaviour could well...
AS I understand it the rule is that potentially controversial incidents cannot be replayed on the big screens - demonstrates a very low opinion of football fans in my opinion - replays are shown in other sports including Rugby League and Cricket.