The thing I like best about being a conservative is that I don’t have to lie. I don’t have to pretend that men and women are the same. I don’t have to declare that failed or oppressive cultures are as good as mine...Man, if I had a dime for every ill-mannered little shit who believed that the cold stares provoked by his bigoted drivel were proof of his incorruptibility and his hearers' intolerance... well, I might have enough money to be one of those little shits myself.
Of course, like everything, this candor has its price. A politics that depends on honesty will be, by nature, often impolite. Good manners and hypocrisy are intimately intertwined, and so conservatives, with their gimlet-eyed view of the world, are always susceptible to charges of incivility. It’s not really nice, you know, to describe things as they are...
Klavan has overthought the sitiation. If he's not "the sort of person you want to be seen with," it's probably not because he's "the sort of person willing to speak the truth" about Muslims, poor people, etc.; it's probably because he's an asshole.
(Hat tip to Sven)