He does this because it makes him money. He doesn't LOVE being famous or being in the public eye all the time, having no privacy and all the things that come with it and has said this COUNTLESS times on podcasts In a very real way.
He's specifically said that's one of the reasons he loved fighting In pride. He could make money then come back home and nobody knew who he was.
Half of the people you see In front of cameras know that in order to make money, they have to sell themselves, their personality and brand, but on the other end, also wish they could just disappear and go off grid.
It's a love and hate relationship, and if you've been paying attention to the entertainment industry for any reasonable length of time, It's not uncommon.
You have a delusional, romanticized idea about being famous, but don't understand the pressure, stress and everyhing else that comes with it.
Fans who just expect these public figures to always be this bundle of happiness and joy at all times, don't live In reality. Plain and simple.
I don't judge any figure on isolated moments, because I know how complex and difficult that life can be. When someone spends half their lives In front of cameras, It's very easy to just isolate a moment and use it to define who that person is, but that's not how things work. It only highlights how shallow and small minded the observer doing this is.