Every moral framework is every other moral framework with extra steps. They're all "morally Turing complete". However, which one you pick may make certain moral

Every moral framework is every other moral framework with extra steps. They're all "morally Turing complete". However, which one you pick may make certain moral views significantly easier or harder to express. It's less that I think rule utilitarianism is morally compelling as a way of deciding what is good, as that I think rule utilitarianism captures some of my moral intuitions particularly well, so I use it to model (some of) the reasoning that my brain goes through when evaluating goodness. In other words, it's descriptive, not prescriptive.