That is your opinion which I totally disagree with. If the ref has to review his decision based on the VAR (a) It will possibkly take much too long and hold up the flow of the game (b) pointless in having a VAR. If as you correctly say the decision is made in the opinon of the ref it...
My original thought was why not show it on the big screen so that we can all see it but then we would have 20k+ trying to influence the ref. It all depends on how far they go back into the build up of a goal as I am under the impression that in rugby they go back to the move prior to the run...