This presents more possible risks than solutions. At least with fiat, there's an element of possible power in analyzing the root cause of how the currency behaves in an economy. With things like Bitcoin, certainly, these Westerners wanting poor countries to take up these new ideas as instant solutions are willing to experiment on them without any responsibility, a system they can't handle themselves in that capacity.
Like some wrote on the site you linked, fiat is a problem in Ethiopia for many reasons and it directly affects the value of the currency and the overall economy. Even if they took up Bitcoin today, the structural problems that were at the underlying core cause of why the national fiat problems existed are still very present and still need to be fixed. A very bad analysis. Lol