Maybe taking a step back and looking at the big picture, it seems to be a pretty good example of the way society has devolved.
In the good old days, there was no shortage of crabby people, but there seemed to be more civility if not tolerance. Perhaps grandma felt that Merry Christmas was more appropriate, but she would most likely take it as a nice gesture.
Today everyone has an ax to grind, an agenda that that they want to force upon you and will not hesitate to be crude and hurtful.
It seems as though anyone who has the opportunity to voice an opinion in the media will do so. They seem to overjoyed at their righteousness when they find the most viscous words possible to denigrate those whose opinions differ from their own.