People say that Conor started all of this personal shit between himself and Khabib, but wasn't it Khabib who technically started it? Supposedly Khabib slapped one of Conor's teammates or something, and Conor took that personal in of itself in addition to the fact that he got stripped of the title.
Regardless, the post-fight brawl wasn't warranted no matter what was said before, during or after the fight.
And the fact that people don't like Conor because of him generally talking shit to his opponents is dumb as *Censored*. Combat sports is a game of mental warfare just as much as it is physical. Yes, maybe McGregor is a bit too vulgar and obnoxious in his approach, but he's done good by hyping up his fights and drawing in views and more dough that way - and no one else in the fight game does it better than he does.
The problem isn't his shit talking, the problem is he attacks peoples backgrounds. Was Khabib's family fighting? No so why does he bring them up.