I believe that Christmas should be celebrated in the way that is comfortable to an individual or a community. In some areas of the country, there are elaborate lawn decorations with inflatable snowmen and competitions among blocks of houses as to who has the most colorful display.
Some folks choose to include a nativity scene, where other folks go all out with reindeer and Santa. The spirit of the holiday should focus on Peace on Earth and Goodwill rather than on the endlessly droning commercialization that inevitably is allowed to occur in a Capitalist society. (For retailers, it is their biggest time of year.)
And as for Dawkins? I respect the man more each time I hear of him, as it seems he has a cheerful and loving "heart" to go with his rational mind.