Sport in general - I'd disagree. If you're talking about football I'd agree.Sport in the UK is just a way for otherwise stupid people to make one hella wadge of cash, take Wayne Rooney for example. If this country wasn't obsessed with these neanderthals he'd be working in Tesco.
There's many sports that are played in the UK well by dedicated and well-mannered people. Pretty much anything other than football in fact! Badminton for instance is something I've been getting into more recently and I haven't seen a badminton player stomp of the court kicking the opponent when they were fed up... Same goes for many other sports.