When it comes to advertisement and publicity on the internet Nigeria is ahead of other African countries, so Bitcoin gaining popularity in Nigeria will also help in its liquidity in West Africa and Africa at large,
I just know in the coming years Bitcoin popularity will be well noticed and appreciated, maybe making it a legal tender in an African country Will Also help in its liquidity, or let's say the Bitcoin is used in trading among ECOWAS country
IMHO, it doesn't have to be a legal tender for these countries. What they only need to do is to support their citizens and if there's a large liquidity that comes from African countries, they don't have to make it hard for these people to go with this market.
One simple rule like forgetting about the potential ban is already going to be a helpful thing for these citizens as Bitcoin gains popularity from that region.
Because with such news about banning it from that region or for some African countries, that's making it more difficult for the people to get engaged and have their own freedom for having another source of income through trading.