[netheril96]

> really cranky with anyone who dared challenge their position.

You could profit from those people, if you are confident in your position, by shorting some of the stocks that shoot up from people's pre-judgments on this matter.

[jeltz]

Usually not because as the saying goes: the market can stay irrational longer than you can stay solvent. Most people simply cannot afford to make those bets against the market.