The concept of 'cultural relativism' has emerged as a critical framework in anthropology, challenging the notion of universal cultural norms. This idea posits that a person's beliefs and practices should be understood based on that person's own culture rather than be judged against the criteria of another culture. Proponents argue that cultural relativism encourages a deeper understanding and appreciation of diversity. Critics, however, contend that it can lead to moral ambiguity and a reluctance to criticize harmful practices. With this in mind, which of the following statements about cultural relativism is true?