You have a point but there's always a solution to every issue if we can search dip.
Yes, those who are waiting for the may suffer if the market continues to dump but this is only applicable to short-term investors and for the long term there's no reason for the to suffer.
BTC and other altcoins are prone to dump through FUD news but another side of the story is that there's always something good about it because every market trend presents an opportunity.
Short-term investment in a bear market is not entirely wise, because after making a small profit from short-term trading, a bull market may follow, but in the case of a short-term trade, you can miss out on significantly larger profits. The advantage of long-term trading is that you don't have to worry about time fluctuations, all you have to do is buy and wait for the bull market.