That is not a well known fact at all, never heard it before. Maybe it's just a well known fact in BC
Also it makes no sense whatsoever, that defination sounds like the defination of a gloryhunter, fan of a someone who's winning and not really the sport which is the opposite of a Leafs fan, leafs haven't made the playoffs in 8 years.
Well you aren't from Toronto so of course it's different for you, you are probably a true hockey fan.
It's been pretty well documented in books.
Quote from a Leafs fan:
They are only team I do watch
Also I've interacted with Leafs fans and most are some of the least knowledgable around.