Some sold in the $30K area where it looked like bitcoin was going nowhere. And the rest sold after the Ftx collapse where it looked like bitcoin would go to $10k again.
I am pretty sure there are rarely any people who are in profit now who bought in 2021.
This is not surprising because I think the people willing to buy bitcoin for $60k or more are mostly newbies. They are greedy and ignorant about the market because if they are experienced investors, they will realize that that time is the peak of the bull season. And buying at that time is much riskier than the profits they will receive. But buying bitcoin for $67k now is completely different than in 2021 because we are at the pre-bull cycle and not near the end of the bull cycle like in 2021. So, buying bitcoin right now is quite safe and the profits are worth the risks we have to trade off.