From everything I saw, Bettman got the longest and most prolonged boos. As has been stated, that's common practice across the league. I don't recall seeing/hearing every single GM get booed, at least not by the entire building. I'm sure there were some boos every time any team but the Flyers drafted, but my God, people are acting as though the fans hurled threats, insults, beers, etc at every non-Flyer affiliated person. It certainly didn't come across as that bad on TV, at least in my opinion. Judging by what Bettman had told the Flyers and what someone posted from Bob McKenzie, the NHL felt the event was a big success.