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Majority called it digital money, or even digital gold (comparing it to Gold, because it's being mine). And as far as changing the world, well it has disrupted the financial industry already. Just look at how banks and government treat crypto. Some of they think that crypto will lead to chaos and economic collapses. But so far we haven't heard anything except positive outcome, specially in countries like Venezuela and Zimbabwe for instance.
Exactly, banks and governments are trying to scare people away from bitcoin and while there are without a doubt some issues, like the huge amount of scammers, those issues are not really inherent to bitcoin, however when there are economic issues in a country we are seeing that cryptocurrencies can be used to alleviate those problems and as cryptocurrencies become more powerful and influential it will not surprise me that its effects will become even more pronounced and positive during the next world crisis and that will lead people to realize their power and to finally adopt them.