[alexasmyths]

You can go anywhere in the world and use USD, or exchange it for local currency.

BTC is accepted pretty much nowhere, and it's difficult to exchange for any given currency.

I can't fathom for a second why BTC would be more popular than BTC at least on those terms. Exchanges may be more readily available for BTC, as USD movement is controlled, you need banks etc..

Especially given the level of technology required ... I don't think that Zimbabwe is realistically the driving force here.