The main point here is: Some of these guys will look like clowns in the long term because someone always makes an overly pessimistic prediction, which costs money to people that follow said prediction. It doesn't matter if the price goes lower than it is now, someone will get it wrong by a long shot.
This is true, but the number of people who get it wrong in the other direction will be a lot more. The number of people who invested substantial amounts of money when Bitcoin was trading at over $15,000 are substantial. And they tried to cost average their holdings when Bitcoin started trending down. And some of them have lost all appetite for cryptocurrencies now and are thinking of exiting at a loss.