Sadly, just as the rest of us are getting giddy about Christmas and all the joys it brings, some will inevitably attempt to pick a fight over Christmas and its status among Americans. And the contempt they’ll sling at Christmas won’t all be undeserving. It won’t be all wrong, but it also won’t be right. More than that, it won’t really matter because arguments seated on foundations that are historically faulty can’t sway convictions grounded on p…