It always gets me when people are like this about, of all things, the US dollar. You can argue that there are faith problems with, say, the Turkish Lira, but the USD is the hard currency that people flee to when others fail, and is accepted unofficially as hard currency in a lot of countries that have currencies of their own.

Even bitcoin is priced in USD and operates trades via a Tether/Circle "stablecoin" "backed" by USD.