Does cultural relativism, as a methodological principle for understanding cultures on their own terms, necessarily entail moral relativism, foreclosing any cross-cultural ethical judgment?

Scholars and human-rights advocates remain divided on whether Boas's relativism was meant only as an anti-ethnocentric method of study, distinct from any claim about ethics, or whether it logically extends into a stronger claim that no culture's moral standards can be judged from outside at all, a question with direct stakes for how anthropology engages with practices widely viewed as harmful.