Exactly.
Jews are not responsible as this author implies.
There is always some injustice in judging individuals by membership in specified groups. Probably more accurate to say that the Left in America, which is not primarily Jewish, is responsible for giving Christmas (and many other things) an aura of not being politically correct. Nevertheless, regardless of the existence of the many conservative Jewish writers and individuals, it's not arguable that a large proportion of Jews are not usually prominent members of the Left and supporters of its causes, which would include this one.