I also think that people arguing does not concern the gambling activity but rather their own personal perspective.  People have different idols and team favorites so when they meet with another person with different liked players and team they often reason out why their favorite is better which sometimes ended in a heated argument and eventually get personal reason for the fight to break out.   It is indeed very disturbing seeing people argue and fight inside the viewing center so I'd rather enjoy the peace watching the game at home than on a gambling view center.

One time I had the experience such incident where two people got a heated argument until they curse each other, I just leave the vicinity and just went home.