Here's the rub. For someone like me, I couldn't care less about HFT. I am in it for the long haul. I've invested for almost all of my adult life. I don't invest on hunches, instead I buy broadly and then hold for a long time. My investments do about as well as the broad market and I have almost no trading costs. Even if some doofus thinks he can beat the market (no, they can't), he'll eat up 1-2% of his money on fees.
So let folks be stupid and market time and talk about dead cat bounces and triple witching hours and other mumbo jumbo. In the long-run I will beat the vast majority and I will do so with very little effort on my part.
The reality is the only investors who can beat my strategy are active investors who are involved in the management of the assets they own (like Buffett) and those with insider information (real insidr info, not what your brother in law told you at the cocktail party). So, let the market tank for a couple hours, a couple days or even a couple years. I couldn't care less.