Your choice of words is duly noted.
Marriage is not a "societal norm".
It is a shorthand alternative to "forming a family unit for the purpose of propagating the race in a more or less organized society".
That the perverts wish to redefine it has zero effect on its continuing definition.
Why can't they (and you) be satisfied by simply creating (or hijacking) a different word?
I would suggest "suicide".
Yes, that was the word I was looking for. Hijackers these days have a habit of destroying whatever they hijack. Cars, planes, etc. Methinks the real agenda of these latter-day hijackers is to destroy the institution of marriage -- probablly the only institution still standing that thwarts their attempt to achieve full parity.