Utilitarianism is the de facto model of alignment because, what shared by all humans—even the intellectually disabled, the oddities is their being in human bodies, it is presumed they all feel pain, and by the same means, pleasure. So this forum and others insist on utility, and value.
Not all utilitarianism is hedonistic utilitarianism, and hedonism doesn’t imply utilitarianism, because you can be selfishly hedonistic.
Not all utilitarianism is hedonistic utilitarianism, and hedonism doesn’t imply utilitarianism, because you can be selfishly hedonistic.