That's not late in the VAR world. ARs are now being training to do exactly what he did if a scoring chance appears imminent. Put the flag up after the scoring chance happens -- even if it's really late.
This is a World Cup referee who will have been training to keep his flag down in that situation for VAR purposes. He very well could have been flagging Ronaldo offside, but kept his flag down that extra second. We will probably never know.
It's incredible the number of people who remain unaware of a massive change to the laws of the sport they love (it was TWO YEARS ago). It's a yellow all day for Phil Jones and not a red. Everyone will criticize the ref even when it means sticking their foot in their own mouth.
IFAB has it's PlayFair website which is studying how to improve the laws of the game during the next five years or so. Playing time is a major area of focus and would either be getting more strict on added time or making the game two 30 minute halves where the clock stops each time the ball is...