People are attracted to charismatic, larger-than-life personalities. That's a reflection of the human condition, not the UFC and it's product.
It's easy to be Henry Humble and sit there with a boyish smile and say "ohh jolly gee I'm just happy to be here, I respect my opponent and I hope to put on a great performance." It takes balls to step into the spotlight.
You're mistaking "balls" with "arrogance".
No, it's not easy to be Henry Humble.
Martial arts teaches discipline and respect. Conor "mixed" in mma.
And although I agree with the larger than life remark, Conor is certainly not that, just the loudest to this point.
He's like the Dana White of actual fighters, surely as close as has been to this point.
And that's why he's allowed to do what he does, because self-promotion puts more snow in the driveway.
Jerry Springer tried this approach with his respectable show about 25 years ago.
I'm not upset at Conor, they should all be paid well, act professional, and promoters should promote to discourage poor sportsmanship.
My 2.