I have to be honest. It doesn’t offend me when someone says, “Happy Holidays.” Seriously. I don’t mind it.
Why? Because Christmas is much more about tradition and culture than about following Jesus Christ.
“Merry Christmas” is not a profession nor a demonstration that someone is following Christ. In the same way, “Happy Holidays” is not a denial of Christ.
I just think there are many, many more important things to be concerned about than whether or not someone says “Merry Christmas” or “Happy Holidays.”