In my opinion, most people who have a lot of bitcoin are hiding their identities, because the anonymous nature of bitcoin is an option for many people in the world or maybe other people who have many famous bitcoin celebrities.
I also think so: no matter how famous and popular a person you are, revealing your identity as the owner of bitcoin ( especially large amounts ) can lead to very bad consequences. We all remember the story when a guy in the Philippines broke home and under the threat of life was forced to transfer all his bitcoins to the wallet of scammers. In no case can you reveal your identity.