I was invited to a few orgies with them; I politely declined, they were very respectful of my decision and I wasn’t asked again (which in retrospect must have been partly due to deliberate coordination - fairly advanced social technology, imo). This didn’t affect my standing or acceptance with them. It may well be a sex cult, but if it is, my experience is that it so thoroughly behaves like a regular community in so many aspects that it at least calls into question the predictive usefulness, if not the accuracy, of the label “sex cult”.