I don't believe millioners like Elon Musk only hold 0.25 BTC. He made the confession on Twitter so it would not be the target of hackers.
Imagine if for example Elon Musk said to hold 100 BTC, hackers from all over the world would target Elon Musk's crypto wallets.
We can't really tell if he is saying true about his holdings, maybe you're right he said that so he can be walking above hackers free from hacking not a target at all but who would believe that this person who innovates stuff don't have much bitcoin to hold? I think he's playing with all of us guys.
Actually I do not care about the statement of the number of bitcoins owned by Elon Musk, the statement would be right or wrong.
Because it does not provide benefits for me, I better focus on my own investment and trading.
Totally right, anyone's money does not have any thing to do with any one of us so why care about them? Much better if we make them as our inspiration especially Elon Musk is known for his doings.