Its a political discourse where people frequently disagree on policy positions. There is really no insult here. When I clicked on this thread, I thought some one gave gaaliyaaN and swore/cursed Mushy. Aitezaz frequently launches into much more blistering attacks on Mushy. This is no reason to leave an office, or country. Well, actually, it could be, but grown-ups, especially politicians have much thicker skin; and they have to bear this kind of disagreement, otherwise they can’t survive in this very rough profession.
Mushy actually has not that thick a skin. Remember, only recently he (or his govt) expelled 3 British journalists for calling him “sonofab**ch”, even though they used it as a term of some historical context and probably did not mean to personally disrespect him.