We can't argue that some people say Bitcoin is a ponzi scheme especially those who didn't know exactly what Bitcoin is or those who lack knowledge with crypto. I remember what my wife's uncle told me that Bitcoin is a ponzi scheme because of the reason that only those who invested early can make more money. You know that here in our place, when we say ponzi scheme it's a scam. In my opinion, they are right that those who invested early can make more money than those who late but it doesn't mean it's a ponzi scheme. You know, those who invested early are not always make more money than those who is late, why? Because they don't have the same time to sell. Some who invested early will sell early, and some of those invested late will hold for years. That's why it's not a ponzi scheme, considering that Bitcoin's security is very secured.