Well, it was a horrible night for the Flyers. They were simply humiliated by the Capitals by the socre of 9 to 2. At the end of the game, Washington had a late powerplay, but with the win already secured, the Flyers would have hoped that the coaching staff didn't put Ovechkin on the ice, which was the case.
Obviously, Wilson was talking about the all-time goal record in the NHL, which is held by Wayne Gretzky for the moment. For some people, this behaviour by the Flyers was "incredibly weak and absolute loser nonsense".