Huh! It's like the people who say "Merry Christmas" to me - and then hastily apologise, because I'm Jewish. You know what? I'm not offended. Not only am I not offended, I happily say "Merry Christmas" to people. After all, I would say "Happy Birthday" to you on your birthday, when it's not my birthday, so what's the big deal with giving you a traditional celebratory greeting on another of your festivals?
I'll sing Jingle Bells with you, but maybe I won't sing the more worshipful, praising carols. Either way, I'm not offended to be hearing them all over the place at this season. (Well, actually I am, but that's because of the overload of hackneyed cheese.)
Stop being offended on my behalf! Your self-righteous, over-cautious 'inclusivity' is offensive in its own right.
It's Father Christmas.