Earlier quoted context omitted.
Even as a liberal I think there's actually something to this idea. You can see it with things like the financial transaction tax proposals that are clearly meant to hurt nerdy HFTs rather than affect banks. I think part of it is that nerdy HFTs aren't eloquent enough to explain what they're doing and how it benefits the world.
I think viewing the HFT tax propoals as being motivated by anti-nerd rather than a out accumulation of wealth that is perceived to be at the expense of people like the tax supporter where the tax supporter fails to see the social utility of the function producing the accumulation of wealth is, well, a significant case of seeing what you want to see rather than what is actually there.
Suddenly some evil nerds come along and use computers to "pick him off"! ("Pick off" is a wonderful phrase Michael Lewis uses but never defines, but it somehow involves computers doing evil things.)
Finally, at the end, Katsuyama builds a new exchange with no nerds allowed.