I am a supporter of VAR but these scenarios (players crowding the referee demanding review, endless replays, long delays of the match) are what I am frightened it will become.
Also, I have watched a few MLS matches in person (NYCFC and others on my travels) after VAR was implemented, and it is an absolute killer of the experience for those in the stands, as you can’t really celebrate goals as you are just waiting for VAR to immediately rule a player offside to disallow the goal (they no longer flag immediately so that the play can run its course and then VAR decides if the goal should stand) or for a five minute review to determine if there was a minute infringement in the build up.