Allow me to explain, as it's really quite simple. The overriding theme of the New World Order is the Malthusian fallacy that there are just too many people. The New World Order is convinced that the only way to "save the planet" is to reduce the global population drastically--ideally by 90% but at least by half. Homosexual relations are sterile, and hence good, in the same sense that abortion is good. If this results in increased mortality on the part of the practitioners so much the better as everything contributes to getting surplus people off the planet.
This is the reason why traditional family structures which are open to life are also under attack. The global elite wants a depopulated planet with just enough of a docile "servant class" to handle their needs and no more.
This radical antihumanism is brilliantly explained in the book The Merchants of Despair by Robert Zubrin. Anyone who wants to understand the left's grounding philosophy will find this book highly illuminating.
While I don’t think this is the whole explanation, I think you are really on target here.