I call this false. Got proof?
ZAMBIAN KWACHA
BELARUSIAN RUBLE
All currencies, all are as volatile as can be.
Bitcoin doesn't really have "domestic products", that is things that are denominated in it.
So, low volatility is a quality criterion for money, and those currencies fulfil it (domestically).
In time of war or hyper inflation, domestic currency might get too volatile, and that's when people switch to other money, such a cigarettes or foreign currency.
Source: lived under a hyperinflation of 1900%/year and people did not switch currencies.
Didn't realize how dire the listing situation was there
:-p