It is some sort of "human" thing, it's got nothing to do with any specific type of culture other than fanaticism. Sports fans freak the fuck out if you criticize their favorite team in any way, ridiculous over the top "patriots" scream about how you should leave if you don't like certain aspects of the country. It happens any time people get too attached to the concept of something.
You mention sport fans freaking out if you criticize their favoriete team. But being a fan of a certain team myself, I can say that most of the people that consider themselves fan of this team are very vocal with their criticism. On a pretty popular fan forum a topic containing positive posts had to be made, because the rest of the forum was pretty sour on everything.
Even after winning four championships in a row, we still weren't happy with the way the team was playing and after a season where we came in second and played the worst football/soccer in years it doesn't look like its gonna get better any time soon.
And yet i'll still watch every game and read every bit of news. So I am very much attached to this team.
Why wouldn't you want something you love to get better?
Wanting everything to stay the same seems like a really strange concept to me. But then again I don't really get people that feel like every form of criticism, no matter how wel argued is an attack on the thing they love and by extension an attack on themselves.