It depends on where the crisis took place for instance if it is in a developed country, we can say bitcoin can be a saving grace but in a developing country like mine, I don't pray for any because if it happens to hold bitcoin can't have any advantage over fiat other than you are sure your investment is secure.
It is true, and most countries today have taken over taxation on cryptocurrency and wallets, which means the government is most likely to butt in on every transaction, but, otherwise, if your country isn't underdeveloped, I believe that the advantages will come in.