Some clearly go looking for offense. These people do seem to be larger in number by the day tbh.
As I just said in another thread...the relentless cries about microagressions and safe spaces...well are usually just attention seeking bollocks.
At the same time, some people seem to think that its their god given right to cause as much offense as possible and then cry about others being more sensitive. These people also seem to be growing in number
The nutters example you give is just silly. And a clear case of people just looking for reasons to take offense. Probably for attention or to prove to the world how 'right on' they personally are

Look at me, I find this offensive ON BEHALF of the people it may offend, aren't I great. Silly, but fairly common.