Excellent point. I believe that’s why Bitcoin should never substitute the existing financial system, too many things can go wrong and there are benefits to the centralized control, e.g., as you said, acting in emergency situations, or fighting the crisis.

Bitcoin shouldn’t be a full substitution, because it could never fulfill some of the fiat functions, but rather it should be a perfect complement to it. Then people will have more freedom, but, in the general matter and in extreme situations the government would be able to act on its own.