Exactly. I did my graduate work on premodern folkloric texts, and they work this way across cultures. The things we would demand of prestige television and contemporary literary fiction (and apparently science fiction, which I don't read) are not emphasized in the sort of texts that ultimately form the basis of things like Star Wars. You're bringing the wrong expectations to the table. If you want nuanced character development and background rooted in sound science, you will not find it here (or in classical Japanese urban legends for that matter), and you should not expect to.