This is going to sound dramatic but there is no threat of a physical confrontation anymore. The younger crowd seems to have become comfortable acting disrespectful knowing there is almost zero threat of being taken up on the words.
There is a difference between getting pumped after a big out, hit, win, etc and blatantly running your mouth knowing the other guys have too much to lose to do anything about.
I don't want to this to come off as a sounding like a back in my day tough guy, but blatant disrespect was dealt with however is needed to be dealt with. And that applied to anybody with a shred of self respect, not just the "tough guys"
Too many cameras, social media. You assault (we called it fighting) somebody all it takes is a viral Facebook post and their name is plastered all over the internet, you get sued, people call your employer, etc. You used to fight and get over it within the hour.
Mike Tyson has a (in)famous quote on this matter.