I can only assume that the reason Christian, Jewish and Muslim spirituality is erased is because the writers are so bitter about their negative experiences with their own religious heritages that they can't look them squarely in the face. But it is intellectually lazy to refuse to take any religious tradition as a whole. Because we are alive to our bodies, gay men are often liturgical specialists. They simply invent new rituals. We need only reclaim them, proud in the knowledge that they are by no means second best.
Intelligent syncretism is no threat to the faith.
Where To Go From Here I hope to make a decent link section here in time. These folks are not only gay-friendly but multiracial and committed to ministry among all kinds of marginal people.