In theory, VAR was introduced so as to eliminate subjectivity on the part of referees in their decision-making. But subjectivity still exists since the VAR personnel making the call still have to exercise their judgement based on how they interpret the visual evidence.
For eg. in the City v Spurs game. a City player was barged in the back by a Spurs defender as he was attempting to control the ball in the 6 yard area, the referee's view was obscured. The incident was shown again on replay and in each instance I would have given city a penalty, yet the decision by the VAR official was to play on - which I found to be utterly ridiculous. Obviously, I had a completely different take on it. By the way, I'm not a supporter of either team.
If VAR is to be retained, it should be used as 'confirmation' in matters such as - did the ball cross the line, was there encroachment, was there handball, was their malicious intent in a tackle or clash, etc. and should only be employed at the request of the i ref.
