It is tied to peoples' understanding of state control of money, and realising that a separation of the state and money (similar to the separation between state and church) is possible.

Thus it is also tied to a little bit of anti-authoritarian, anti-control ethos, which, however marginally, is present a bit in the US only, and, as I said, Switzerland. Most other countries are full of sheeps accepting whatever the powers that be feeds them.

Hence the question.