This has been the worst part of this world cup in my opinion, and I agree that we referees will get an impact from it. Unless players are immediately carded when they surround the referee, then it will continue all game and every game.
We (in my region of France) have started using the sin bin for dissent offences, and how fantastic it has been after the first season. Me and my colleagues here agree that 10 minutes in the sin bin stops any further dissent. Plus, about a third of the way into the season, since the players and coaches realise they will play one short (sometimes two short), dissent has almost stopped. Just to add, that a second dissent offence in the same match resulted in a second sin bin, but it would become a red card, as for two yellow cards. All season we never got a second dissent offence in the same match! Perhaps a sin bin is the solution for all this that we have been seeing at the world cup, I am sure it would very quickly stop players surrounding the referee.
I also agree that FIFA must have instructed referees to be more lenient with 'yellow card' fouls. So many of these bad fouls have not see yellow cards, and again, it will impact on us next season.
I was a referee in England for 33 years, and for the last 12 years have been refereeing in south west France.