this is very funny, in my opinion most of the dumper are not those who buy bitcoin at the price of $ 19k but this is a game of price and the market is being manipulated.
everyone has different conditions, so when people sell at a cheap price, there will be a reason. well, maybe you don't have an urgent need so you can still hold the assets you have, and wait for the price to be even higher.
Yes when the price of bitcoin is down people need to not sell till it if they need money in urgent and i see there are some people who invest their some portion of capital in bitcoin and save some portion in case of any emergency they use it and I think this idea is very better for them to hold their bitcoin for long time.