Kill kill kill kill... the quants?

Quants have been taking a lot of heat in recent years, first it was all those CDOs that went bust, now every blip in the market is blamed on high frequency traders. Certainly there's some truth to it, but this guy is really taking it too far:

http://www.thestreet.com/story/11229935/1/kill-the-quants-before-they-kill-us.html

This guy makes it sound like there was no such thing as volatility before HFT came along - come on! First of all the quants do the research and make the models, they're not the ones who decide to leverage 30 to 1 putting the financial system at risk. Second, who is really hurt by a 6% move in the stock market? If you can't stomach the occasional 50% loss then you shouldn't be investing in stocks anyway.