I think I remember VAR in the WC well, but I don't ever remember a decision being changed following VAR where the ref didn't see the footage himself.
EDIT - just caught up with other posts, and see that they reviewed 14 out of 17 decisions.
But in the World Cup that view from different angles was then handed to the referee on field (via a TV near the 4th official), and the referee used it to make the decision.
It seems odd that the decision is now being taken by other people.
No, this is a worry. I don't like the handing of control to some people out of sight, I prefer the way they used it in the WC, when the ref still ultimately had the final say.