Originally Posted by
stegosaurus
All four points you made at the beginning are related to its implementation. Part of that implementation is the way it’s used, how, and by who.
There are fundamental issues with having a centre ref walk over to a TV and watch film multiple times, for example. That’s an implementation issue due to technological restrictions or whatever, and it does a lot of the things you’ve stated are inherent to VAR. It isn’t inherent to VAR though, just this implementation.
The idea of VAR is good, the fact that different places use different forms in different ways and interpret it’s use differently show that it’s more in the implementation than the idea of VAR in general.