Watching the rugby TMO on the same day as VAR was hugely insightful.
TMO has objective protocols, is clearly displayed on the screen in the stadium, has immediate access to the right and necessary technology, conveys the entire conversation openly and - crucially - enables the referee to ask for help to arrive at the correct decision, including allowing him to see it again from a variety of angles if necessary. No climbdown, simply the best referees in the world seeking help to arrive at an answer and being empowered to do so.
VAR has none of the above, is secretive and subjective with the absurd "clear and obvious" get out. So today... "was Origi fouled?" and at St Mary's "was Josh King fouled?" would have been yes, since it is quite clear the referee may have been unsighted. So we're stuck with the patently ludicrous "I can see why he may not have given that" and some underling is stuck in a bunker asking himself if he's got the guts to overule refereeing "deity".
I've always disagreed with VAR due to the myriad of minor calls and marginal decisions that are part and parcel of the fabric of the game and the awful ruination of its flow and spontaneity but only the football authorities in their sheer complacency and myopic insularity could have come up with the truly abysmal half-baked camel that we've been landed with.