is it a surprise that that sort of sport would attract assholes more readily than other sports?
I've kinda become diplomatic enough about it - i'm not out to defend mcgregor because it's just one thing after another with him and none of it good - but in life most people discover they are good or reasonably competent at something and it gets them through - boxers and mma people and kickboxers all find out they are good at something, but it's not very nice. At a certain point it stops being about being a bit lump of fast limbs and more can you compose yourself doing something that most people might do unwillingly maybe once in their life. It's some mad balancing act of mental and physical strength and it makes sense that trying to act normal in real life after a few major high profile bouts escapes a lot of them.
Assholes? in this case, yes for sure, but in other ways its people born with a set of abilities and mental setup thats gonna land them in conflict or set them on a course for being some kinda black sheep and there are 1000 mid level boxers out there who are just people who walked into a club and asked someone to give them a set of rules and bit of guidance.
Could say the same about music.
Could say the same about movie stars.
Could say the same about millonaires.
Disclaimer - I quite like boxing.