It's a reversal of the old "Humans are Special" stereotype and ties in with "Every Ethnic Group is Special Except for Whites". The Aliens stand in for non-whites, as they always have. Now, instead of being invaders or primitives, they're preachy Mary Sues, a role once preserved for the (White Male) Human hero. The Hero's new role is to unquestioningly accept whatever wisdom they're willing to part with and bestow it upon the unwashed masses of his homeworld.
Personally, I'd like to see all races/species portrayed as selfish, manipulative, biased, and short-sighted, each in their own unique way and do away with the bizarre notion that any one race/species is more inherently right than another.