I didnt say there was inflation, its just one of those things that can make people drop the US if it happened.
US debt cannot increase indefinitely without consequence, and in a time of desperate need (such as the 2008 bailouts) it has to print lots of money and hence cause inflation. If the US dollar suffered 10% inflation 2 years in a row, it could originate some drastic changes, as dollar holders might want to get rid of the coin. Figure china selling out its entire dollar reservers in one year, US goes to the tank.
Im not being alarmist, its just a possibility. Comparing Bitcoin to USD makes no sense at this stage in many ways, starting with volume.
By observing that the USD did not "collapse" despite it?
Plenty of BitCoin people seem adamant the USD is definitely going to collapse, but can't explain why it hasn't already, or where the instability causing it too would come from, or why smaller, less wide-spread currencies don't do the same barring exceptional circumstances (i.e. Zimbabwe).
(Not making a case for "collapse gonna happen", just saying "if, then your military's worth sinks with your currency"...)