To be fair, both the original writer and the scriptwriters created numerous religions in the GOT world.
Some of these are very relevant to the plot. They are both pagan-Catholic allegory or varieties of mystical paganism, and some of it is outright shamanism, much like Japanese Shinto.
The scriptwriters have downplayed much of the religion in the last couple of seasons, no longer constrained by GRRM’s material.
Its interesting to compare to JRR Tolkiens treatment of religion in LOTR. It is both nearly invisible (nobody goes to church!) and part of the deep structure. Or CS Lewis in Narnia, where it is all allegory, or in Out of the Silent Planet.
The Romans called their little ones “scorpions,” but they were based on torsion (”twisting”) rather than tension (”pulling”). Or am I thinking of another model?
The ancient Chinese had a repeating model, it was attached to a heavily weighted chain. Each link weighed enough to “recock” the device, but it takes like a team of horses to pull the chain back when it’s run out if links.