I think it's because hockey is such a big sport there.
When I was a kid in Yankeeland, we were hockey NUTZ. My dad found this old Finn, first name Reno (sp?) who had a regulation rink he had built in his back yard! He had a Sauna too, and a nice frozen pond to jump into after.
I loved the rink, the rest was way beyond my 10 yr old Yankee puritanism.
The old fart slammed me against his boards more than once...always acted like he didn't like me. Then one night...yeah he had lights too, I got a chance to "politely" check him on his butt after bouncing him off his own boards when he was off balance.
He and I got along great after that. Sometimes I wonder where my life would have gone if we hadn't moved to Florida a couple of years later. I was a really good hockey player for a kid. For sure I would have learned to fight good earlier than I did.