Bearded Bruins win Cup. What's wrong with that?

Every man jack of the players has a beard..... Weird huh?

See the photo above of the Boston Bruins celebrating their win over the Vancouver Canucks.
What I don't get is that every single one of the guys, apart from the coach, is sporting a beard.
Given the bent of this blog, I couldn't help wondering if there was some connection with the religion of peace and the requirement of pious men to be hirsute.  I guess not.  Then why??