There wouldn't be any fun in sport if you couldn't (argue about) discuss what you watch :)
Passion and emotion makes everyone say things that aren't necessarily based in fact, me more than most. What I don't like about sport is that we tend to go straight to criticizing peoples motivation and character rather than acknowledging that the opposition are really good and sometimes do a better job.
The fantasy of sport is that willpower can get you over the line. Sometimes this is true but rarely. Usually it's skill and better organisation. I've been around a few international sports people and almost universally they are hyper competitive and desperate to win. Some of them are just better at at it than others and display their emotions differently.
I used to be very emotional about sport in my younger days, and still am during the games. I've found what I enjoy now is the chess match and really understanding what is going on. I've also been known to be a contrarian but that's a whole other story....