Good point. You know, I think Pope Benedict has bigger issues on his mind. This is the petty stuff of tabloids.
I don't think anyone here is meaning to belittle her. That MP might have been belittling her with that "does she think she's a Catholic Queen" comment, but the MP's a political opponent trying to score cheap point. That may be "petty", which is a word I've seen used on this thread about two dozen times. But correcting a faux pas in regards to etiquette between great dignitaries is in no way petty, in and of itself.