Whilst a small population has adopted cryptocurrencies there is room for better adoption in countries like Zimbabwe, one limitation now is the cost of moving between fiat and crypto in these countries is high and has pushed those with fiat to move it to other fiat currencies like USD, reduction in those premiums by the "middle man" selling bitcoin can go a long way in encouraging people to move to crypto currencies, at the moment most buyers of crypto are those that want to move money around quickly and very few use it for store of value.
If top e-commerce sites like aliexpress are to start accepting crypto currency that can be a game changer, most africans buy from there and with cryptocurrency it will be easier and cheaper compared to them looking for US dollars which in most cases they get at high premiums on a black market. There was a notable movement of acceptance of cryptocurrencies in the purchase of second hand cars in zimbabwe when beforward started accepting bitcoin for payment of cars.