Really? I must have missed how the statement from Best Buy regarding "several holidays" shows a different perspective.
The message about shipping and the date of "Dec. 24" that you referenced simply indicates that Best Buy wants to make money off of Christians and military families without daring to recognize the name of the holiday. Walmart apparently doesn't consider Christmas to be a four letter word though. It would be nice if Best Buy's management felt the same way.
Happy Kwanzaa, my brother!