That whole debate is one of the dumbest things to come out of America.
The rest of the world doesn't worry about it, because Christmas is like 90% secular. The Christians do their thing today, and leave the rest of us to celebrate Christmas with friends and family and too many cold cuts of meat. You can say happy holidays and nobody's gonna get upset, but even as a non-Christian I'm more likely to wish you a merry Christmas.
(The poms and their "happy Christmas" are weird though. Just sounds wrong.)
The whole thing is tilting at windmills. Nobody gives a shit what you say but they want to fight this supposed force out there trying to control what people say. It doesn't exist in a way where it will ever matter.