Personally, I find Brunet's comment rather ironic and I'll explain why. Often, journalists will criticize athletes for not having a sense of loyalty towards their teams. They will even sometimes call them mercenaries.
That being said, even if it may have been time to trade Sid The Kid, from a loyalty standpoint of a team versus the player and the fans, I would keep Crosby like the Wings kept Yzerman. And today it's rather rare to see an athlete who has only played for their original team.