The problem is VAR has been billed as some kind of flawless error elimination device. Even the name and the way people talk about it is weird. It's a referee looking at a TV screen yet we refer to it like it's a hyperadvanced robot.
It's that quest for perfection that causes all the problems - if we just had another official (with a name) helping the referee by looking at a replay and giving instant feedback then errors would go down and it wouldn't disrupt the game much. That's basically what we wanted in the first place.
Mistakes would still happen but we'd just blame them on the referee as we've always done and we wouldn't need to treat every goal like a potential crime scene.