The author seems like a very angry person and I couldn't help but not that they seem to think that Capitalism is somehow to blame for all the world's woes.
I think it is time to stop seeing anger as misplaced in discussions. Being labelled "a very angry person" does nothing to invalidate that person's position.
The author is simply reflecting the rising anger in the community. If you don't believe me, look for public polling on trust in Si valley and social media companies, look at politics, or just talk to anyone outside the bubble.