Oh please. With the manifold blasphemies that occur day-to-day in the US, most of them being committed by so-called believers in Christ, you pick on this pseudo-insult?
Get a grip. First of all, the term "Christmas" is not a scriptural one. Second, it is unlikely that our Savior was not born on December 25th, the traditional date for celebrating Saturnalia, the advent of Saturn or Tammuz in ancient Babylonian mythological lore. And finally, I think that the Almighty is above fussing about a silly abbreviation, especially a legitimate one.
C'mon dood. Learn to concentrate on weightier aspects of Christianity, like love for fellow believers, sharing your faith with others, giving to the poor. Those are things we should definitely not abbreviate.