I don't completely agree with you on this dude because the percentage of people that invested there money in Bitcoin are very few because back then so many people don't believe Bitcoin will be this great, some even see it as a scam because the aware back then is not as it is now. Na now boys don open eye and then don see the potential of Bitcoin and how important and beneficial it will be if they invest in Bitcoin. Some Nigerians sold their Bitcoin and other crypto back then because of lack of knowledge and because of immediate needs and wants.
OP did not put it the right way, but he is making some valid point from the example he gave. However, statically speaking we have very few percentage of Nigerian citizens that are holding Bitcoins in their wallet for years now. If there was a way to find out, we will see that most Nigerians are making money out of Bitcoin by trading or earning mostly. Although times are changing and may Nigerians are beginning to see the need of saving in Bitcoin, with money they dont plan on using at the moment.