To be clear: there are probably lots of people who don't know what the Twelve Days of Christmas are, and that's fine. But how many confidently assume they are the twelve days leading up to Christmas, instead of the twelve days in the liturgical season of Christmastide that runs between December 25 (Christmas Day) and January 6 (Epiphany)? And will confidently say so in front of a national TV audience?
Nor is this just being picky. This is a matter of millions of people's religious practice. I sent an e-mail to the ESPN Ombudsman complaining about it. For what good it'll do.