this goest to the lefts concept of postive and negtive right..
The libertarian position rule 1.3 is a classic libertarian negative right statement, government keep it nose out of this thing.
But Marriage is bit of positive right, the government gives you something, they license you and you get some privilege with that license
A libertarian should be for shrinking or eliminating a so called positive right not expanding a government positive right grant of privilege
You aren’t going to end legal marriage in America, so why waste time talking about it in our time of crisis when we need to fight a political battle to preserve America?
In 1790-1890-1990- you could always have whatever kind of “marriage” you wanted with your partner, but to be legal, it had to conform to law.
In 1780 and 1794, and 1798, etc, when the feds were passing federal law on marriage benefits, they had to recognize your marriage as legal, it couldn’t just be whatever you wanted it to be.
Actually it could be, but it wasn’t legal.
If you don’t care if your marriage is recognized by government and the courts and law, then do what you want.