We are talking here about people that we DO know. There are a lot of crypto billionaires we don't know about. And we never will. Take Satoshi as an example. He is a crypto billionaire and we will never know who he is...
I have to agree on that if you are a big holders of Bitcoin and other top coins in the market, and you are living in a third world country or country that has a restriction on Cryptocurrency, you don't want your name added to that list or to any list of Crypto whales, whatever coins or tokens that maybe, you have to protect yourself and your coins as well.