alt Hacker NewsAs someone who has worked in the industry, I've yet to see any compelling argument that high frequency quants are making any meaningful contribution to society. Maybe on the low frequency end, but slightly higher market liquidity doesn't serve that large a social good imo.
High frequency quants almost certainly don't directly provide a massive social good, but they're one of the many facilitators enabling the smooth functioning of markets that do.
But FWIW, the comment I was replying didn't seem to be specifically critical of high frequency quants. Dismissing the entire field as something that doesn't contribute to society is beyond absurd.