I wouldn't say that this article is about the universal structure of stories, it's really about the universal purpose (or reason) common to stories in most (all

I wouldn't say that this article is about the universal structure of stories, it's really about the universal purpose (or reason) common to stories in most (all?) cultures. IMO, the universal structural aspect is about how to tell good stories (hero's journey and such), however this article is actually about how storytelling in all cultures brings us together as a group and the actual universal about stories described in the article is moralism (good vs bad).