s stupid moral oversimplification necessary in a mass-market bestseller? E.g., Tolkien
I would say The Silmarillion is not very morally simplistic. Specifically I would call it Black and Gray morality [TVTropes], because I can’t think of a single non-God major character who’s totally good. (Maybe Luthien?)
Actually, since the Universe is accelerating, the past light cone effectively gets smaller over time. Billions of years from now there will be significantly less cosmological data available.