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.
True talk, to add to this, back then most people don't know the value of Bitcoin, even when the knowledge was passed on to people as of then, they never make use of it. Just as you said, they think it was an method of scamming people until Bitcoin grow massively, that is when people starting believing it's not a scam, which made some people missed their opportunities of becoming rich back then but now, even as Bitcoin grow massively, there are still some people who don't want to change their perspective about Bitcoin or crypto, because they still believe it's a scam and these set of people don't really want to have the knowledge even when one tried to talk to them, they won't listen no matter the evidence one shows them.
It's only those who understand and know the value or the benefits of one investing in Bitcoin that won't want to missed another opportunity again even if it turns out for Bitcoin to terminate today, they will be glad that they once benefitted from it.