If you do not need your money now then why you want to sell it. Wait for some more time the price of bitcoin will increase and when you see the price at a level when you feel that you are now at profit then use them and if even in that time you do not need money for your expenditure then do not sell your bitcoin because with the passage of time the price of bitcoin will increase.
Sell if you want to sell, don't hesitate if you are good with it and he's still in loss but if he really doesn't need that money he can sell it at his own will.
But as usual, what I'll say is just wait until the market goes okay and you're not in loss anymore. If he got no choice and he's buying these people who are panicking with the current situation, he's free to do it.