Empirical Proof that America's Liberals Are Stupid

Sasha Volokh wrote a pretty out there post about asteroids, taxation and rights, specifically noting that his views here are not normal for Libertarians. Delong doesn't just rightly make fun of Sasha, no he says that this shows that "America's Libertarians are Completely Insane". Reading comprehension and/or fairness/honesty are not the man's strong suits. Using his logic, I conclude that America's Liberals are dishonest or idiots, or both. And no, I don't think he's kidding.