Judith Flanders has written some excellent books about the Victorian house and the Victorian city and so I looked forward eagerly to Christmas: A Biography. Unfortunately, although there is a lot of information about the origins and development of various Christmas customs, much of what she writes is for me not entirely believable.
A short synopsis: Olde English (and German and Scandinavian) Christmas traditions are neither as old as we have been led to believe, nor do they or the holiday itself have strong connections to Christianity. In the last 200 years the holiday has been taken over entirely by greedy Capitalists.
I suspect Flanders lives in that elite Progressive bubble we hear so much about. She knows no Christians and sees very little Christian activity around her and assumes that there is and has been very little of either anywhere at any time.
I have always believed the details in Flanders' books. Then I read in this book that the Christmas season is "the precipitating factor in an annual peak in divorce rates, or the period when domestic violence rises by a third." How an annual divorce rate can be tied to a season I'm not certain. The rise in violence after football games has been thoroughly debunked, although there are those who continue to believe it in the face of significant evidence to the contrary, and this makes me very skeptical of the Christmas violence theory. Her mention of Thanksgiving falling on November 31st in 1939 finished off any credibility she had left.