Didn't really phrase it right, didn't mean every potential one. Rather, if VAR is at all undecided, and I'm sure that must have been the case last night, he gets the referee over for a look. A large percentage of referees think this should have been VC, and that to me suggests that a clear and obvious error was made. Even pundits like Keane and Carragher, who normally aren't keen to see players get sent off, said this was a clear red.
We have real injustices here. Son was sent off on VAR advice for a vastly lesser offence, so if VAR is going to lead to total inconsistencies like this it needs a rethink. Even more so as the referee on both occasions was Taylor, you have to now ask who is refereeing the game. I am also very sure that the relatively calm response of the Chelsea bench helped make the decision, and it isn't too far a stretch to say that if Maguire's actions had led to a brawl the outcome might well have been very different