So, don't sell to them instead, hold patiently and in matter of time depending on your goals and assets values, you could imitate them (whalers) or could even be one in the future.
This last paragraph crowns it all. How patient can we be? Some persons who keep hodling and hodling are not just being strategic, they are just being greedy!
Everyone has their different investment goals which you have stated in the op. Some persons planned to sell their bitcoins at 70k, 80k and even 100k which they have done already. That's their goal which they waited for long to achieve. If they were able to sell at those prices, it doesn't make them weaklings and impatient people, they were only sticking to the plan. I am not talking about those confused investors who do not really have a sense of direction.
Right now some persons are already aiming for 150k. If they exceed that 150k goal, that's greed. They may end up being profitable from being greedy or miss the opportunity to sell at their targeted price.