If not himself, who is going to say he is bipolar? No dr can say he is bipolar, even he or she diognosed him during screening.
Personality disorders can bring the worst in people with little self control in maniac episodes. I learned enough about this as a security to not harm mental unstable people when they experienced their serious episodes. Other countries they just shoot them.
Poor people goes to jail in state because there is no treatment and no accept that mental illnesses can create personality disorders if not treated correct in time. Obviously KW has to much power, and he can play out the worst in himself without anyone stopping him. He is over the edge and as I said before, most likely a narcissist as well. Trump is most likely an narcissist as well, and allow himself to say alot, but who stops him. His fans loves him for that.
https://www.therecoveryvillage.com/mental-health/kanye-west-opens-up-about-bipolar-diagnosis/