Which doesn't surprise me. The whole world is trying to "offend no one". Offend no one, please no one either.
The phrase "The Year of Our Lord" is nothing more than a marker. And I intend to use it as such, since it is in common usage. And "Common Era" means nothing if we end up getting another such marker a few hundred years down the road--or if the inception of Agenda 21+ will be used as another common era. We need to keep "AD" as a reference so people in future generations will be able to realize which "common era" they are referring to.
And why be offended? I, for one, do not claim to be a practicing Christian. However, I still accept (and often enjoy) certain things that pertain to Christianity. Christmas, with "Christ" in it, is one. Another is the use of the Lord's name in common usage, such as the calendar. And I am not offended by seeing crosses and statues that are used in Christian worship. Just because I don't practice Christianity doesn't mean I should take offense by someone else doing so, and you are not forcing me into Christianity by using a few Christian terms or putting your Christian symbols where I will see them regularly. Second hand Christianity simply isn't real.
Now, it would be different if you were going from door to door, trying to force me into Christianity and would not take no for an answer. But, using "AD" does not do that. Nor does saying "Merry Christmas", playing Christmas songs or TV specials featuring religious aspects of Christmas, or placing statues and crosses outside your property that I see.