You're very correct about that side of hockey culture...while poorly phrased, Jess Allen's controversial statements on The Social (Canada's version of The View) about young players being "white boys" and "bullies" aren't entirely wrong. They're based on a real stereotype - which while like all stereotypes isn't universal, but also didn't come from nowhere. Go into any high school or junior high school in Canada, and you'll see a gaggle of the boys who play hockey at a high level walking around with a certain swagger and arrogance. Sometimes it's a healthy confidence, but sometimes it's just being a dick...and that line gets crossed a lot. The one place she was way off base was the part about "white boys"; the non-white players are just as capable of being arrogant pricks as their white team mates...
Picture the Letterkenney hockey players, with a dark side.
And maybe I'm misreading it, but sending a guy out for a warm-up lap on his own on the occasion of his first NHL game sounds like a kind of cool ritual, not an embarrassing hazing thing...