From your linked article: "Typically, self-plagiarism is only considered to be a serious ethical issue in settings where a publication is asserted to consist o

From your linked article: "Typically, self-plagiarism is only considered to be a serious ethical issue in settings where a publication is asserted to consist of new material, such as in academic publishing or educational assignments [13]. It does not apply (except in the legal sense) to public-interest texts, such as social, professional, and cultural opinions usually published in newspapers and magazines."