This is not the fact. There is not correlation between network connection or communication to cryptocurrency transaction. Yes, it is based on network but that is not the hindrance. The hindrance is as same everywhere in the globe about cryptocurrency. The fear of crash, bubble stories and lagging in legislation for usage and acceptance.
If you are generalizing Africa then this is not true however if you target specific parts of Africa such as West Africa then it is in fact correct. There are a lot of internet black spots in Africa because they do not have the infrastructure to accommodate internet.If we look at South Africa or even the north then its a completely different story as they have the capable infrastructure which is available to the masses.