Your scenario doesn't make sense.  There's no reason for all these nations to be beholden to the US dollar and collapse while acting as indentured servants to the US.  They'll just abandon the dollar because the US can't fight every nation on the planet at the same time.  There will be major tariffs, major currency wars, capital controls, and things like Bitcoin would benefit in the process.  Even if the opposite happens, your supposed scenario of capital flight of everyone on the planet to the US would send Bitcoin to the moon alone.  Bitcoin wins big either way.  Your claimed scenario is even MORE bullish for Bitcoin than mine.

I think I've just proven why your attempt to correlate Bitcoin with Armstrong gold predictions fails completely.  You think everyone will want US assets and US dollars.  Bitcoin is the lowest friction method possible of getting money out of Timbuktu and into the US.