PG may have become an investor and most newcomers may have forgotten this but before YC he was himself a hacker who started a company and became successful.

Now years later, after having started a company through YC and then becoming a YC partner and now seeing this same kind of magic happen over and over again with hacker founders, I can't help but attest to the fact that his worldview has proven to be valuable.

The disillusioned worldview justifies lying on the floor. The essay's worldview prods you to get up.