With so many countries accepting it already, African countries would be left underdeveloped if you they fail to lash onto the Blockchain so as not to be left behind by the rest of the world.
Bitcoin and cryptocurrencies is a way out of the many economic hardship so many African countries are facing and if Bitcoin can be adopted soonest to aid the plight of the citizens then the problem of recession and inflation would have gotten to a balanced quotient before the central banks even offer a solution out.
Imho, african countries have way more serious problems to deal and sort out before thinking about adopting bitcoin as a legal tender.
Just take for example Central African Republic and their experience with making bitcoin legal tender. They agin absolutely nothing as they were simplt not ready to adopt something as tehnical as bitcoin is and instead they just did it because it was a cool thing to do.