I think there’s some truth in this; however, I’d also say that simply having the ability to review should make a positive difference. While there have been errors, some of them pretty glaring, even with the VAR, there have also been occasions where decisions have been correctly changed.
Spain’s second goal last night was a good case in point. Previously, the offside call would have stood, and the goal would have been incorrectly ruled out. Instead, it was reviewed and, much to the Moroccans’ chagrin, the goal was given.
Maybe it’s the case that having more than one set of eyes checking what are essentially subjective decisions will help; being able to review non-subjective decisions certainly will.