But there’s nothing irrational about holding a certain set of preferences,
Sure there can be. As trivial cases, people could have preferences which violate VNM axioms. But usually when we talk about morality we don’t think that merely following the weakest kind of rationality is sufficient for a justified ethical system.
Sure there can be. As trivial cases, people could have preferences which violate VNM axioms. But usually when we talk about morality we don’t think that merely following the weakest kind of rationality is sufficient for a justified ethical system.