Earlier quoted context omitted.
False choice fallacy: either "no hyperinflation" or "rampaging mobs". In fact several countries have survived hyperinflation without the mobs. Once again, Russia 1998, Argentina 2001, Icelad 2008. On the other hand USA 1930 and Nazi Germany saw confiscation of gold by the government and it might make sense to prepare for that as well by storing your gold abroad.
Actually, rather than a false choice fallacy, my real point is that no matter how prepared you are, you can always hypothesize a situation for which your preparation is insufficient. Concluding that therefore, any given action (in this case, saving dollars) is a bad idea because it "might not be enough" is an invalid argument. One must argue about probabilities. I personally do not rate a hyperinflation of the US dol…
Well, I cited at lest some foundation to my argument - there were numberous cases where serious devaluation did not coincide with too much social disorder. I don't see how being "the foundation of global economy" makes Americans any more likely to riot and pillage. The only cases I can think of this happening in developed countries is an outright revolution, for which there does not seem to be basis in US right now.
You're quite right to worry about government doing the pillaging though. While probability is low, the consequences would be disastorous and if one is hedging their bets might as well include this possibility. Hence why I suggested keeping your goods abroad - that way you are diversified across two political systems.