The whole point of selling  Fear, Uncertainty and Doubt, is to talk down the market, or specific stocks with good prospects, and take advantage of bargain prices. The target audience is the individual investor who is risk averse and is a Nervous Nellie. 

The market serves best  those with steady nerves and whose time horizon lets them outlast adverse fluctuations until their portfolio  or the market recovers. 

Take Apple Inc. for example:, where the stock went down and stayed down for several months because the revenues didn't keep going up at the end of one calendar quarter, largely because of exceptional sales the previous calendar quarter. The stock stayed down and all of a sudden went up and kept going up because the fiscal Q1 to Q1  comparison dramatically improved. For those paying attention this was predictable and justified holding on and now the stock is at an all time high.