Do you really know Jews who make a point to have a ham and cheese sandwich on Yom Kippur?
Do you really know Jews who blame Judaism, not Nazism, for the Holocaust?
Have you ever seen a Jew get redfaced and nearly hysterical while dripping butter from his or her mouth and pointing threateningly with what is left of their lobstertail?
I think that these are apocryphal stereotypes.
I did know a Jewish woman who would have ham on a matzo for Passover. And before Yom Kippur she would stuff her face with Italian sausage and pepper hero sandwiches. Culturally she was Jewish. She was liberal and only observed the aforementioned holidays.
These are not fictional depictions at all, however I did relate the most ‘out there’ episodes.
By in large Jews are good Joes just like everyone, but there are just things you cannot say around them without breaking a cultural code. And it is impossible to know on a situational basis how or why someone may be offended. Again, I think this is the point of the magazine.
Such as, “Gee if you are so unhappy with the Jewish religion, why not consider Christianity?” You and I may think this a practical and innocuous comment, but through experience I have learned that it is not. It is breach of the cultural code.
MISSING SENSE OF HUMOR ALERT....MISSING SENSE OF HUMOR ALERT...STEP AWAY FROM THE HUMOR AND KEEP YOUR HANDS WHERE I CAN SEE THEM...ALL THOSE WITH A SENSE OF HUMOR, PLEASE EVACUATE THE AREA IMMEDIATELY..
Seriously, there is a form of ironic humor or argument known as ad absurdum in which the most extreme expression is used deliberately to poke fun at how ridiculous the target is even if they don't actually live up to the absurdity of the expression.
Having said that, there is actually a well known story of an Israeli (I believe either in politics or academics) who used to highly publicize that he was going to a restaurant (I think it was in Cairo) every single year on Yom Kippur to eat the most traif (unkosher) meal he could possibly eat as a way to show his disdain for Judaism. And there are definitely many academics in Israel nowadays who readily and often compare Israel with Nazi Germany and villify Jews and Judaism in ways comparable to the post.
So, you see, what makes stereotypical humor funny is the way it imitates part of reality, with varying degrees of exaggeration.
Ironically, only in Israel have I seen Jews so hateful of traditional Jews that they made a point of eating a ham sandwich in our faces just to offend. I've not had anything near that experience with American Jews.