True that JS originally stated it was a Christmas card, and as joemikeb explained, the season was co-opted by the Catholic Church; but make no mistake—anyone who is not Christian or pagan would not see "yuletide" or "season's greetings" as relating to their religious beliefs.

And don't get me started on the (misguided, in my opinion) belief that Christmas trees are not religious symbols!

On a Mac since 1984.
Currently: 24" M1 iMac, M2 Pro Mac mini with 27" BenQ monitor, M2 Macbook Air, MacOS 14.x; iPhones, iPods (yes, still) and iPads.