The author deeply misunderstands Libertarian philosophy. Libertarian does not translate into egalitarian. True a Libertarian would tend not to favor discrimination against gays. Not because they believe everyone must be treated exactly the same but because it is none of the government’s business what people do in private. The army example is a poor one since one gives up privacy when they join the military.
And lower-case are entitled to believe whatever they want on the homosexual questions about adoption, marraige, and service in the military. 'l'ibertarians want an effective military, and DADT is a more effective one than one that has open homosexuals serving.
And homosexual arab linguists losing their jobs? Just move them over to State where they fit in much better (hah!)