I agree the infrastructure isn't there yet but problems with national currency is a government issue, infrastructure issues can usually be solved but governmental issues tend to be a lot harder and all countries that rely on fiat currency are subject to inflation
You can tell that Bitcoin, and its advocates, are from developed countries. No one who has lived in a developing country and seen crushing poverty would make such arguments.
The bitcoin guy is not going to accept 1 Zimbabwe dollar to 1 USD any more than your black market dealer who has USD. The real currency conversion rate is the problem, not the act of obtaining actual hard currency.
yes, there are a lot of fungible ways to transfer hard currency over the internet... once you acquire it.
again: acquiring it is the hard part, because nobody wants to trade a zimbabwe dollar for a USD.
Bitcoin does nothing to help your zimbabwe dollars be less worthless than they are in USD, therefore they don't help the currency conversion process at all.