Usually some days before Christmas, me and my parents go out and visit with other parts of the family. However, Christmas Day is specifically reserved for the immediate family. Which means whoever is living in the house at the time. We have a little bit of a special dinner, usually something that we all really like, but not too big nor too fancy. We're having lasagna this year. Aside from the dinner and the exchanging of gifts, we go and do our own stuff as we usually do, with one minor exception. Nobody is allowed to be an asshat. To me and my family, that's like the #1 thing - being mean or rude to anyone is unacceptable on that day, regardless of the reason, motivation or the situation. That is what makes me cringe about his post.
As for getting sick of the holiday? Eh, I get sick of people always asking me what I want for Christmas. But other than that, since we tend to leave each other alone, I'm fine with it.