This line of thought would make a lot of sense, but when I think about it I wonder whether a country that is already fighting hyper inflation is even in the position to pull off a currency transition. I think a shift or an additional introduction of a cryptocurrency on a nation-wide basis isn't a trivial thing to do if a government is really serious about it. You don't want the country to run into chaos even beyond the hyper inflation itself. They would need reliable, useable infrastructure for it and a least level of technical literary such that people would be supporting the transition/introduction. They often buy dollars and that makes sense because they still relate the dollar to a strong economy (and I am not saying that is the case, but for a lot of people not familiar with some of the hard facts it probably is).

I might be wrong but I believe that we are still a few iterations of software/infrastructure away from getting Bitcoin into the hands of the many. It is not that easy as countries that have the infrastructure may think (or get lobbied enough by the banks) it is better to not use Bitcoin whereas those who think they could need Bitcoin probably lack some of the infrastructure. One problem I see would be in-store price adjustments during times of high Bitcoin volatility. It would be problematic if it isn't somehow automated and people would perhaps slow down or accelerate spending depending on the information they have available and the ability to process that information individually.