The other massive failing is not having the ref and VAR mic’d up like in rugby union. That way the fans - who are ultimately paying the bills - at least get to understand the rationale for the decisions
Thus I agree with. As much as Rugby (particularly the posh code with two too many players

) is about as interesting as an audio-only presentation on the history of the University Boat Race, it's remarkable to see players built like brick outhouses being put in their place by a referee who's about one third their size. Compared with the histrionics seen from top level footballers it's a much more civilised sport (until the game restarts, at least).
But a few questionable decisions don't "ruin the game", they're just part and parcel of the game, by nature of how the rules are open to interpretation. Before VAR there were still plenty of decisions that were obviously wrong with the benefit of TV replays- those decisions weren't "ruining the game" either, they were part of it. Implemented correctly, VAR should minimise those incorrect calls, but won't ever remove marginal calls completely. One thing I have noticed both from fans and even so-called experts seems to be an expectation that VAR would be a magic bullet for all contentious decisions. Such an expectation is always doomed to failure.
The question should be, how do we implement the technology without turning every decision into a controversy? When VAR was first mooted, I favoured an approach similar to elite Tennis, where players/teams have a limited number of appeals per half. The captain or head coach of a team can request that the VAR panel have a look at a contentious call, if the original decision is upheld the challenge is lost.