Ser, read the post again, and please get the actual context. What I said was, from the viewpoint of a normie and/or a person from the traditional banking system, Bitcoin might be considered a "Ponzi" by those people like how we Bitcoin HODLers consider shitcoins.
Plus from a another, more controversial viewpoint, Bitcoin is ACTUALLY a "Ponzi", but a sort of naturally-occurring "Ponzi" LIKE GOLD.
A Ponzi scheme? Bitcoin is far from it and should never be considered such by any reasonable person.
Being used to fiat is not a valid reason for anyone to play idiocy on a fact. Does Bitcoin pay A and deny payment to B? Or it uses the money of A to pay B etc, just like a Ponzi scheme? Certainly not. Bitcoin is a currency, but in the form of a decentralised crypto network, that's the only difference it has with fiat currencies. If the government allows it to have full rights and potential, it will help the people more than the fiat currency.
Actually what @Wind_FUry said is true that lots of people especially those who engage with traditional investment think that Bitcoin is just a Ponzi scheme. This is what they believe because they don't know how bitcoin works. But for sure those skeptical people lessen over the years especially when bitcoin gather much attention and got serious attention towards possible adaption especially if Trump would win as President this election.