Never mind VAR. I'd say it distracts from the bigger issue, and this is something highlighted by VAR, that is the capability and decision making of referees.
They're fully professional now, well paid, but they often seem no more capable than when they were part time.
Human error is always going to occur, if they don't see something, then fair enough. But a lot of the time they do see things, or when VAR is used, see things several times, and still make decisions that seem baffling to everyone else.
They're in denial if they don't think there's a lot of scope for improvement. I'd say they need a top down review of how refs are trained, do ongoing development and are assessed because their level is currently nowhere near good enough given the resources now available.
And don't get me started on the level of fitness of some of them. Those minimum standards are nowhere near high enough for the pace of the modern game.