Thanks for bringing this up, because it's often a theme for me. How is trust created? How is it maintained in time? What role inertia plays in this and how long some cultural biases can be prolonged, until the shit hits the fan, so to speak? I think right now the trust in fiat is mainly a cultural thing, intertwined with other identity myths, and it is somehow inherited, not constantly verified. Because trust in fiat is more of a cultural thing, it may take longer to be completely wiped out, because people tend to cling to their identities (being them physical or cultural), but the good news is that when this trust is wiped out, it will also carry out a cultural shakeout as well.
In simpler words, once people will no longer trust fiat currencies, they will no longer trust governments and current forms of leadership as well.