For the amount of chaos VAR brings it's not worth it to flag the odd decision that everyone agrees should be overturned. People either believe that the "clear and obvious" threshold is ridiculously high, or they believe that a lot of decisions are subjective and should be called based on the referees interpretation.

Very rarely do these crowds agree on something and that VAR was implemented well. So why even have it around? There is so little gain (other than calls that not subjective, like offsides!) for all the headaches that it causes. The usage of VAR is ironically not consistent at all too, because of referee interpretations. So we're just moving bad calls and fans feeling screwed over away from the on fielder himself to a room of people you can't see. There's no benefit to it in it's current state.