Why? Well, because marriage is an institution of rules. If pro-gay marriage activists aren't liars, they should respect those rules and not seek to undermine them. Pro-same-sex marriage advocates, including the editorial board of The New York Times, constantly compare gays to blacks under Jim Crow. They flatly assert that male-male unions are directly analogous to white-black marriages in the days when racial intermarriage was illegal.
I've never thought such comparisons were sound, and this story demonstrates why. No blacks denounced the concept of monogamy in their struggle to do away with anti-miscegenation laws. When Jackie Robinson fought his way into professional baseball, he didn't want to change the rules of the game. He wanted the rules to apply to him to. The same goes for integrating the army, the schools, etc.
Perhaps it's a sign of how far the pro-gray marriage argument has progressed that The New York Times now feels comfortable to float stories more or less undermining the idea of gay marriage. Until recently all good liberals - gay and straight - had to be on the same page, saying that gays are just like everybody else.
And, yes, I know from talking to homosexuals that many gays do, in fact, feel that way. But some gay activists see marriage as a kind of prison they'd like to dismantle, and conservatives who suggested otherwise were branded as bigots and homophobes who "just don't get it."
Well, if the activists think marriage can still be something called marriage, after the folks at Fab magazine rewrite all the rules, then they are the ones who just don't get it.