Don't know how to break it to you, but I am pretty sure we're all just on a very brief stint scurrying around pointlessly on a rock near an unregarded yellow sun located at the unfashionable end of the western spiral arm of the Galaxy.
Yes, that's not the same thing if you believe that people should generally work towards improving social utility[1]. It takes some significant mental gymnastics to convince yourself that getting a market edge over other funds to improve your hedge fund's performance at the expense of theirs is improving social utility. It's just concentrating wealth from some rich people (one fund's shareholders) to other rich people (your fund's shareholders). Maybe if you're lucky you'll even be taking money from retirement accounts.
Even if you argue that someone else would take the money if you didn't, that's not enough to offset the loss of so many people doing something so wasteful from an intelligence perspective. The current incentives draw significant portions of intelligent people away from doing something constructive for society (science, medicine, engineering, math) to competing in an information game for rich people.
As for your link to Quora, that's a completely incomprehensible rant, just FYI.
Just FYI, it was an explanation of the term 'social utility'.
Indeed what a way to spend your short life, chasing currency by watching parking lots empty and fill while clicking buttons to move sums of digital funds around.