While I appreciate the sentiment, the article performs a sleight of hand by connecting the unassailable "harm is bad by definition" to "those are harmful things

While I appreciate the sentiment, the article performs a sleight of hand by connecting the unassailable "harm is bad by definition" to "those are harmful things". Relativists argue that what is harmful is not a mathematical truth, but rather a result of a given system of values. In the end, the article just shows one point of reference, but fails to establish that it's objective.