The power that Bitcoin gives us has never been seen before, if someone told you in 2005 that sooner we will start seeing the worth of our leaders you will say impossible.
Today we can know how much Trump Bitcoin wallet is worth, the more popular you are in this world the easier it is to figure your Bitcoin worth, unless you don't share your address at all, this is the only way your identity remain unknown.
Sharing your wallet address is usually a matter of choice and people usually wants to know your holdings as a public figure who is into cryptocurrency, my personal opinion will be not to share it at all. I wouldn't if I'm in such position because that may expose me to some security risk which I wouldn't want to be exposed to especially as I'm in such a position of attention so that people out there will want to know all of such Information of me because of the position I occupy but if I have measures for security then I may allow.
I didn't have an idea about what Bitcoin was as at 2005 and honestly I really do wish I did, maybe now I would have been amongst one of the top crypto millionaire currently.