I think there is a reason why American sports fans feel pushed to the extremes on this question. The professional sports culture in the U.S. is dominated by athletes each trying to outdo the next in projecting a thuggy "gangsta" image. "I'm a baddah muthuh****** than y'all is."
Not a day goes by without an article in the sports section about some moron arrested for attempted murder after a shooting in a bar fight (the perp's defense, "He was lookin' at me!") Or the police called to an athlete's home when the guy beat up his girl friend, or athletes bragging about how many illegimate children they have strewn across the landscape (not that they have any intention of supporting any of them.)
The problem -- so the sociologists say -- is that these young men, because of their athletic gifts, have never had to learn accepted standards of behavior.
So when nice youngsters who are equally gifted athletes come along, no, it's not boring at all when they say, "I am grateful for the opportunity to represent my country in the Olympics. I will do my best." That's not boring. That's a welcome breath of fresh air.
Just my opinion, of course.