Personally I headcanon that the Yautja are trans dimensional gengineered humans. Their Culture is so hunt obsessed because in another dimension/timeline portions of the human race were abducted, genetically modified, and bred to be a slave warrior race. Canonically they overthrew that bug species a LONG ass time ago right?
I believe their spirituality must be based on some higher truth they’re aware of, and not mindless zealotry and fanaticism. For example, I headcanon that the Yautja soul/psychic energy field is near immortal. That they use small nukes not only to preserve their tech from technologically inferior interesting species they’re hunting, but also to free their psychic fields from their bodies 100% to ensure they’re able to be reincarnated again.
These are a species so powerful, and so far spread across the galaxy that they can hold Xenomorph Queens captive, and breed that species to have controlled hunts. These people are successful at what Weyland Yutani were trying to do and always fucking up. Think about that.