Happy Holidays bothers alot of Christians because they feel the culture is being molded away from Christian values by way of political correctness. Because multiple holidays fall around the time of christmas, it's now politically incorrect to say merry christmas to everyone when the possibility of someone celebrating hannakah or kwanza exists. And I dont think its just this issue that is the reason for the contempt, but that many people who would love to see the disenfranchisement of the conservative christian movement are backing this idea.