A long time ago, when I was n High School, we were asked to write a Christmas essay.I wrote that I felt that" Xmas"" was incorrect, and offensive to Christians. (I was thinking about "expert", as I have heard that defined as an"unknown under a lot of pressure.") To my surprise I was told that in most areas of the world, "X" is the symbol for Christ.
Must have be a good lesson, as I still remember it.