people who call bitcoin as either fraud or ponzi scheme has no in depth understanding regarding cryptocurrency. but once they fully understand it, they will love crypto at all angles. a lot are still beginners or just starting to know bout crypto, so expect various opinions arising, good or bad perspectives. you know better if you are a crypto user for so long. so you know what crypto can do to humanity.
it is very true what you say in your opinion that people who value cryptocurrencies from the negative side of course they are not sure and believe in investing using cryptocurrencies and of course they lack understanding and understanding what crypto currencies are and all forms of investment