"But if something is true, then it is wise to promulgate it."
To teach it, yes. To make it a necessary pre-condition for theosis/salvation, no. Something like ABC simply doesn't rise to that level.
But we are made in the image and likeness of God. We are able to love with life giving love, as the Creator loves. To remove the life from love would be to lower ourselves, to fail to live as our nature requires. That is an impediment to salvation.
Kolokotronis: To teach it, yes. To make it a necessary pre-condition for theosis/salvation, no. Something like ABC simply doesn't rise to that level.
the Catholic Church ... proclaims anew: any use whatsoever of matrimony exercised in such a way that the act is deliberately frustrated in its natural power to generate life is an offence against the law of God and of nature, and those who indulge in such are branded with the guilt of a grave sin. - Pope Pius XI, Casti conubii
Kolo, committing "an offence against the law of God" or a grave sin certainly affects one's salvation.