If a person has lost 80%, this means that the trader is so-so. He was thirsty for profit. I think they should have understood that this will happen. Especially buying Bitcoin at the peak of its popularity was a dubious investment for them.
80 percent is a lot , I also think if the trader has lost so much then he needs to revise the strategy , I think if such a percentage is in the red I think you just need to keep the token and not sell
For those are being loosers in the pump and dump market and it seems they must learn more from the expert. Sell when it gets peak and buy when it gets bottom. This could be the main thing to trade. So many people are not even seeing it and they still do a blindly trade.