I’f i’m a earth pony in the canon-line, i will work my way to make some kind of wings or an airplane. something too futuristic is not quite a thing in that world.
Also i love physics, equestia its like Minecraft’s world, where the sun and moon moves around the planet.
Welcome to the land of alternate universes. Similarly to your point, the show also doesn’t have advanced rocketry. Doesn’t have to be cannon to the show to be entertaining.
I get where it’s coming from, but it still strikes me as odd to call Celestia and Luna’s power “magic mumbo-jumbo propaganda” when the world they live in absolutely has verifiable magic in it, and those abilities have been demonstrated on multiple occasions.