Then on your own how do you understand bitcoin? Then the critics should also tell your the functions of the fiat currency so that we can see if there is any different between the two. And if I am not mistaken, fiat currency is to exchange goods and services physical and in the recent time it has used as the digital Banking system which is known as cashless transactions of buying and paying things. In my country if you go inside the bank, the highest amount of money will be given to you now is $6 or $8 and I don't know if because we are from the poor people.
But when I went to the bank to take some amount of money, the cashier told me that it's only $8 they're giving out to customers and I took the money and left. Because of the things we buy now is transfer and not cash a again. So I don't see any different between bitcoin and fiat anymore and the only different is that bitcoin has lost it core value of digital currency to buy things but people are only interested to invest with it.