If you want to win the Olympia, you need to shave your head. I don't care how big and ripped you get, as long as that offensive, creepy rope of who knows what is dangling from your head, you will never be Mr. O. Take it or leave it.
It apparently means something to Kai---could be spiritual, could represent his "journey" or the time he has put in...
Why should someone's hair determine placing in a BODYBUILDING contest? Just silly- dude trains year round diets for 16 weeks and a ponytail will determine if he's first or second?
It's a male beauty pageant, hair can make for the last final points that are needed.