All I want to add it’s a bit strange he doesn’t mention Iain Banks, whose Culture novels are explicitly about the idea that civilization can become harmonious with the kind of anarchist socialist post-scarcity that space travel and massively intelligent AIs would allow us to coordinate. The books examine the moral issues such a hyper-powerful space civilization would face. I suggest starting with Excession.
This essay by Peter Frase, also in the new issue of Jacobin (I promise I will blog about more than the new issue of Jacobin) is fucking great. I agree with almost all of it, both the descriptive and prescriptive. His blog is one of favorites, I really recommend it.