There’s still some subjective opinion at play though. Take yesterday, Sideshow Bob pulls Salahs shirt, it didn’t affect his movement but it’s still technically a penalty, so ref gives it, VAR can’t and doesn’t overule.
Then in the United game, the United player is being held back by the CB arms all over him, and he falls as he shoots, ref doesn’t give it, VAR doesn’t overule. The latter was more of a penalty offence than the former imo, as the defender affected the strikers movement and caused him to fall, but nothing doing, even with VAR.