They can't block your crypto account/wallet like they did with bank accounts in Greece, Cyprus, Iceland etc. https://en.wikipedia.org/wiki/Capital_controls_in_Greece
Even only this is enough, but there are many more ways this insurance works.
Even only this is enough, but there are many more ways this insurance works.
99% of this junk operates within centralized exchanges who can be forced to close it down and have a disproportionate level of influence on the currency itself.
It can be, and may do so under extremely small volumes, but the vast majority of people interact with this in a centralized fashion.