That certainly takes all the fun out it for some people, doesn't it?
But seriously...
This is a very good article. It notes correctly that libertarianism isn't a complete moral system, nor is it intended as such. It deals strictly with economics and politics. Moral suasion is thus seen as the province of individuals, not big government. The 1st Amendment's prohibition against an official national religion is in line with that thinking. (Those who question the idea ought to ask themselves if they'd have been happy to have "Pope Bubba" for eight long years!)
I would posit that it is not strictly about those two issues alone, but that it deals with human rights as it's primary focus.