I don't think they are all greedy and stupid, Cryptocurrency is a highly speculative asset maybe they just playing it carefully by cutting the losses. We all know the recent government regulation could also be affected the price. And also the $10k support line is broken so another leg down to the next support is expected.
Yes, I do not think it is greedy. They are under a lot of risk and pressure behind the benefits of investing. Everyone has the desire to make money, they take a different path, as long as it is not illegal, they are deserved. For folly, everyone will make a mistake when it does not mean that person is stupid.