John's action was questioning the credibility of the game. As the top player he is undermining the product and showing little credit for what has made him great.
All teams get good and bad calls, that can define a season. There were other calls in that game that went with Newcastle. I don't care how good you are, you don't have the right to do what he did, and it is not the first time.
His histrionics when they lost to Parra cost him a lot in reputation and he has slipped a few pegs in my estimation. He is a talented player but to call him 'great' at present is not on due to him being too precious. It is about time someone stood up to his bullying!!!