As a neutral fan watching this game, I will say this:
- Wales got away in the first half, not getting a yellow card. There was no wrap, it was a shoulder charge. Textbook yellow card.
- Argentina late in the game not getting a yellow was the right call. The mitigation was properly explained and a joint decision by the referee, linesmen and the TMO.
I will say however, that it's rare that mitigation goes so far that it's not even a penalty. Should it have overturned the initial penalty Argentina got in the corner? Perhaps. That is a discussion worth having. But Argentina not getting a yellow is the right call.
On the game overall: Wales was outscored 29-7 in the final 50 minutes. That tells you all you need to know. They just didn't capitalise on their chances after getting an early 10-0 lead. Argentina deservedly won this game.