It is said because many investors are getting out from Bitcoin because the price has fallen very much and is not rising from quite a long time.This statement shows that the investors who are leaving Bitcoin are comminting a big mistake for which they will regret in future.No doubt BTC price is down now but it is fully capable of being recovered and for sure it will rise high in future.So the investors who are still holding their BTC's will be happy in future and those who are selling now will surely regret.