They are not God's only channel they are not God's channel at all and note that the word channel in this context comes from occultic sources as in spiritistic mediums serving as channels of angelic (in fact demonic creatrures) conveying knowledge from them to humans. Strange how so many ex dubs do not know that the WTS was steeped in occultism for at least the first half of its existence, Russell even printed a book containing the sayings of a demonic angel to a woman that served as a channel (medium).
So the FDS being God's channel is just a false pretense calculated at hiding their real nature from their potential victims so that they will be better able to manipulate and exploit them.
As for sexual degeneracy like it or not that's the way of the western capitalistic and materialistic world we live in, having good order in sexual matters is definitely the ideal state but how many can seriously abstain from sex until their early thirties when most people are financially ready for marriage? Gone are the days when people married during their teens. In a cold uncaring world, and the JWs are a prime example of this, people find some vitally necessary warmth in intimate sexual relationships even if not of the ideal orderly kind. When society, eg the JW society, sets up the infra structures that can support high spiritual states then they can talk: take the beam out of your own eye before taking the straw out of someone else's eye. Until then virginity and purity are just a dream for most regardless of what priests, monks and elders like to say.