He never says "AI could lead to post-scarcity" in the entire piece. In fact, he says:
> Before making this argument, I want to defend the topic. Utopia is not around the corner; these issues don't have any practical urgency. But I agree with Bostrom that thinking about utopia “can serve as kind of philosophical particle accelerator, in which extreme conditions are created that allow us to study the elementary constituents of our values.” Reflecting on utopia might tell us something interesting about human nature more generally.
> Before making this argument, I want to defend the topic. Utopia is not around the corner; these issues don't have any practical urgency. But I agree with Bostrom that thinking about utopia “can serve as kind of philosophical particle accelerator, in which extreme conditions are created that allow us to study the elementary constituents of our values.” Reflecting on utopia might tell us something interesting about human nature more generally.