Currently Worldbuilding has a question asking for more information about whether the Moon Goddess and Horned God of Wiccan mythology are tripartite or not. The poster also wants to know what the three parts would be for each.
Note: I'm less worried about whether the question is formed properly for Mythology.SE and more worried about whether it could be written properly. So if it is Too Broad because it asks about two deities at once or if it is unclear what information would answer the question, those are fixable problems. But if perfectly written, could that be on-topic? Feel free to explain how the question should be written to be on-topic.
I don't think this would be good for Mythology, not because it's about a mainstream religion (we do handle questions about stories from Judaism, Christianity, Islam, Hinduism, etc. there), but because it's not about a Wiccan mythological story.
I'm not sure that I understand the distinction here. It seems to be saying that "What is Odin god of?" is off-topic and "How did Odin lose his eye?" is on-topic. If you agree with that viewpoint (the question should be off-topic here regardless), please explain why you feel that it would muddy the site's purpose (or whatever you feel the problem is).
Note: the question is currently closed on Worldbuilding. I don't know that I agree with that either, but that's the current situation. The claim is that it is too much about the real world beliefs of Wiccans and not enough about creating a fictional world, but that's a Worldbuilding problem.