To be fair, after McClellan's notes about the lack of primary data linking Christmas to non-Christian holidays I would gleefully support divorcing government observances of Chrismas in favor of generic winter or end of year festivities.
Republicans in the US have really soured me to anything Christian, which I now associate with property rights of the rich, authoritarian autocracy and white power movements. (That these might conflict with scripture is irrelevant to the policies lobbied by ministries and pushed by Christian-identifying officials.)
Christmas was on its way out when Charles Dickens wrote his potboiler and changed how we saw and celebrated Christmas in the following century. It might be time to put it to pasture and forge anew new winter traditions that mean something to who we are today.