He will "average down" the total value he is financially worth in the long term. Each time he buys at a lower level and the bitcoin continues to drop he will take an ADDITIONAL loss. He should buy when nobody wants it and sell when everybody wants it. That's what happened the last years. Below 1k nobody wanted bitcoins, above 10-19K everybody wanted them.
No way I wanted anything to do with bitcoin. I guess you are speaking for yourself here when you say everyone...
Not speaking about you but about the person you are speaking about in your posting. I clearly wrote HE and not YOU. So was not addressed to you.