Earlier quoted context omitted.
Economic Inequality example. People in Harlem vs. People in Brooklyn. Extreme Economic inequality example. People working in Walmart for less than a working living v.s. the Walmart family or the Koch family.
What are you saying PG is confusing then? He is talking about economic inequality caused by technology. Are you saying that technology can't cause extreme economic inequality? Comparing a Wal-mart worker vs. Bill Gates, Steve Jobs, or Paul Graham sounds like extreme economic inequality by your definition. I think you are missing exactly the point of the post, while accusing him of being confused.
However they do have something against someone like Uber or Wallmart or the Koch brothers.