Test prep tutoring and nowhere-near-the-top programming are both very good for making a living without spending much energy. The Scott Alexander post you and lexande linked has a good description of the relevant considerations for test prep tutoring.
Living in a random non-hub city, programming jobs for the state pay only about $50k/yr to start, but they’re easy to get (trial task for one was basically just “make an HTML website with maybe a button that does something”) and the expectations tend to be pretty low. I worked one of these as my main source of income until enough EA volunteering became EA freelancing became just barely sufficient to quit the day job and see what happened. I think this route is underappreciated, and the movement’s central orgs seem to have a lot more capacity to pay for specific work than to hire full-time, higher prestige employees.
Main downside of a low-stress programming day job is that being in an extremely unambitious environment for 40 hours a week can be psychologically uncomfortable.
I also found his very interesting, though I craved something in a longer format. I could tell he had heftier models for situations where things cancel out less neatly, and I want to see them to see how robust they are! Looking forward to seeing what he’s working on at the Global Priorities Institute.