I guess they have a crappy currency, even crappier than currencies like the dollar or the euro, and people get by as best they can. Apart from being extremely useful for the unbanked. That makes sense. From what I see on the forum, something similar is happening in Nigeria.
Unfortunately, life is not easy for people living in many African countries, and regardless of the fact that they have many natural resources and hardworking people, they are still mostly poor. I think that Bitcoin can be of great help here, primarily as a currency, since people only need a smartphone with internet access and a BTC wallet.
Over the years, many similar stories have emerged, and I think there are many more, we just haven't learned about them yet. Volatility is certainly a problem, but these people can probably profit from it, part of the income they have to spend/change to fiat, and part of it they can save and make additional earnings in the future.