One of the major traits of the Great Depression was that people lost their homes.
That does not happen with a currency collapse. Instead, when a currency collapses, people can pay off their old home mortgage notes with wheelbarrows full of worthless Dollars. In this way they keep their homes.
When they keep their homes, a major catastrophe is avoided.
This is not to say that a currency collapse is painless; lots of people would be caught off-guard and lose the bulk of their stored wealth (e.g. in checking/savings accounts)...but, Americans have the *least* of any nation in wealth stored in such accounts...so our pain would be less than anywhere else.
Americans have most of our wealth stored in 401k/pension/IRA/brokerage accounts...and in our homes. Well, stocks can handle currency inflation reasonably well...they just go up in price as the currency falls. And people don't lose their homes in a currency collapse, either...so the bulk of U.S. wealth is essentially shielded from a major currency collapse.
That's not the recipe for a major economic disaster.
This was *not* the case, however, 8 decades ago. Back then, most American wealth was in cash (typically hidden under mattresses or "saved" in banks). Even then, however, it wasn't a currency collapse that brought on the Great Depression. In fact, the Dollar rose in value at several points in that timeframe.
And both the German and U.S. economies recovered...one after a currency collapse, the other after an asset collapse.