But then if na you see this kind thing or even get people wey dey reason like this wetin you go do or you go let them be or trying harder to make them understand system?
If i was in your shoes Op, after explaining to him with how much I can, I'll just leave it there because talking further may be interpreted to be marketing skills with an interest was to convince him but bitcoin. paraventurely that he develops interests to buy, then I go stretch further to explain to him more including the risk factors.
Him giving the impression that until he sees Satoshi Nakamoto in reality is only when he can buy bitcoin shows a very high level of unseriousness. So there's nothing you can do than let him be.
Those kinds of people usually falls scam because if someone indicates to be Satoshi Nakamoto online with that his mentality, he's definitely going to be mislead because he'll never see Satoshi Nakamoto.