The general issue I've had with VAR during the WWC has been how slow its been, sometimes for things that should need just one look at replay monitor, if even that. There are plenty of decisions that the VAR official should be able to adjudicate on without the need for the ref to run off the field for minutes at a time.
At the same time, since of the commentary on it, especially from the likes of George Hamilton, has verged close to hysteria. Marginal or not, VAR has spotted things refs and linesmen havent or aren't able to. That semi offside is the perfect example, as was the penalty England botched later in the half.
Refs - especially, if I may dare to say so, female refs - need more time and experience with VAR, so they learn to use it effectively, not excessively, and that it's an assist, not a crutch.