The reason that is the general consensys [SIC] (and pun intended), is because of the amount of propaganda by the state (and state co-opted media), along with the competitor bashing from the slew of shitcoins, many of which attempted to gain a foothold in various cities and regioins.

Blockchain, not bitcoin, was the mantra on the continent for well over half a decade!

Celo (affiliated with Stellar) spends a ton of money in Africa. Cardano / Charles Hoskinson, ... is all over the continent. Previously, blockchains like Algorand had been very active. Binance is the latest to be paying handsomely to expand their footprint (for not just their exchange, but for development for DeFi and DApps that use their BSC blockchain) in many African nations.