Bieber I feel like gained more respect as he aged, but for sure there was the image of being a brat that he had. As for McGregor, he's cocky which is entertaining as he was able to back it up for the most part.
Doesn't make any sense - fighters should stick to doing what they do and if celebs want to fight they should fight each other not other trained fighers!
To clarify, when I was talking about their wrongful actions, for Bieber the spitting on fans from a balcony and pissing in a restaurant mop bucket came to mind. As for McGregor, I was thinking about throwing a dolly at a bus filled with people and him punching and old guy at a pub.