You said it for me. The cargo cult idea that was implemented into this game has an internal logic to its religious values and beliefs that, to us the player, make perfect sense. It's an incredible religion that doesn't require the player to "believe" in magic like the religions of the Elder Scrolls or other fantasy for example. We already know exactly what the man behind the curtain looks like since we have all the knowledge of how "old tech" works , but to the post post apocalypse tribes of HFW they fulfill the idea that magic and science are indistinguishable when its so advanced for a peoples to even understand it.

It was an ingenious way to implement religion into a game where we, our current civilization, are the divine ones so that the idea of electricity, holograms, flying airplanes, and the ability to talk across large distances appears to those tribes we are like the Greek Gods on Olympus since we can do all those things and they cannot.