Do you guys realy think a 40$ Billion Networth Guy Hold only 0.25BTC?
Yeah coz why not? I mean it's not impossible that he is not into bitcoin despite of being rich. He got Tesla and I think that's enough proof that he can be a billionaire even without owning a single crypto. Besides, he is a well known Dogecoin fan that's why he only got .25 btc 
. maybe he has a lot of doge like billions of it. so he only disclosed his btc holdings so as not to make a big fuzz with it. but it just shows that he knows how to deal with crypto. it is not a rocket science anyway considering that he is into rockets literally.
anyway, I think there are a lot of known personalities that are silently holding bitcoin. and if you are a holder, you really don't need to brag it to others.