This misinterpretation you've just laid here is same misinterpreted notion the government has about bitcoin that is making them go after bitcoin and it users throwing all kinds of harsh policies on them. With that fear that bitcoin has come to replace fiat and therefore devalue it as though they were in competition. Bitcoin is only an alternative digital currency here to provide self custody of individual finance (privacy) to those who pick interest in it and in addendum proffering financial freedom. More interestingly, a lot of persons adopts bitcoin today as an hedge against inflation which fiat is peone to.  Nothing like helping people to devalue fiat.