Bitcoin would make these problems worse. The whole reason they got into this mess in the first place was by pegging their currency to the dollar, which meant they couldn't devalue the peso when they should have done for a long time; when the eventual reckoning came it was brutal. With bitcoin it would be much much worse, because you can't ever do that decoupling, and you wouldn't even get the US government doing writedowns like QE (which at least mean that in any global financial disaster, you've got a government doing approximately the appropriate things).
