This is either an uninformed or misleading take.
It isn't necessarily "Africa" or "Americas".
The heuristic is "is my local fiat shitcoin stealing my purchasing power".
Counter to your claim and easily provable with a basic search Nigeria is one of, if not the leading in BTC adoption %.
https://www.msn.com/en-us/money/news/nigeria-is-the-second-l...
https://www.statista.com/statistics/1194735/bitcoin-online-s...