I think you have to look at "Silicon Valley" as a kind-of short-hand for the FAANG (Facebook, Apple, Amazon, Netflix, Google) companies, along with Microsoft an

I think you have to look at "Silicon Valley" as a kind-of short-hand for the FAANG (Facebook, Apple, Amazon, Netflix, Google) companies, along with Microsoft and Intel. It's more of a "state-of-mind" than an actual state. So the author's point is that the "monoculture of thought" that pervades The Valley (and elsewhere) is in fact a problem, and one that needs to be addressed. There are different words for the monoculture. Here on HN you might see it referred to as "the hivemind" or "groupthink". Or HN itself might be called an "echo chamber". I think this is a valid concern, expressed by a voice in the minority, and is worth the time to attend and reflect upon. To answer your original question, I would say that the harm that Silicon Valley is causing the world is the creation of the hivemind itself. It's not overt; it's insidious.