I do see some truth in that. More for the Left than the Libertarians.
I think the Right's disenfranchisement with Libertarians over Gay Marriage/Gay rights is just that, disappointment, "
But.. you guys agree with us on so much other stuff!" etc.
I see the Libertarian stance as merely being
consistent with the ideology. I've always held that trying to "win" Gay Marriage is a mistake in the long run and no right minded Libertarian should do much more than offer moral support, "Gay people want to be married? Go for it, more power to them..." etc. To do so otherwise treats the .gov as a prize or crown to be fought over, or as though we're rival siblings arguing to win over a parent. That just empowers the .gov in ways to the detriment of all of us in the long run.
Gays ought to just live as they see fit, and ignore the .gov on the matter as much as possible. The few places the .gov might try to forcibly intervene with them, or do something they feel is unfair, like interfere with parental rights, inheritance, next-of-kin issues or whatever... should be met with civil disobedience, and force if necessary.
http://www.a-human-right.com/s_pp-ar-glock.jpgFreedom's messy, and it isn't for sissies.