Not everyone has the role of a protagonist fighting for humanity against a great inhuman evil that only they foresee, and struggling to gather allies and resources before time runs out. Yet Eliezer has that role.

No. The UFAI is nonexistent, and therefore noncombatant. I'm not sure Eliezer has even tried to make the case that UFAI is the most likely existential risk. Lots of people see serious huge risks in our future. To say nothing of the near-constant state of death. EY certainly wasn't first with the concept of world-killing UFAI in general, arguably he's late to the game.

I can't think of a story in which the protagonist spend lots of time trying to do things the majority doesn't want to try or don't think are hard, but it sounds like a comedy.