Do you get the Seinfeld Jew joke?

The deeper meaning could be that if they were Jewish they would have found something to complain about.

Jerry Seinfeld Tells Norm A Joke Only He (& Adam) Would Get
“Two gentile businessman meet on the street. One of them says, ‘How’s business?’ The other one says, ‘Great!"
Seinfeld was a guest on Norm MacDonald Live and invented a joke that flabbergasted most people in the room. Jerry claimed that only Jews will get it then later clarified to the Jewish co-host that he is too young to understand. As predicted by Seinfeld, neither Norm or Adam fully comprehended the levity of the comedy. It is possible that there was no joke.
The trending video on YouTube has gathered some 240,000 views and spurred debate of the meaning. Is the joke about how things are great  for the gentiles or if they were Jewish things wouldn't be great? The deeper meaning could be that if they were Jewish they would have found something to complain about.
Jerry Seinfeld is royalty amongst comedians and his colleagues might be too shy to ask for an explanation. This might be a riddle that is beyond explanation.
The comedian made his fame on the popular 90s sitcom 'Seinfeld' and has since become the highest paid comedian in the world. His short lived movie career contains one film called the 'Bee Movie' that failed to gain the same success as his television career. Jerry Seinfeld found renewed success on the popular web series 'Comedians in Cars getting Coffee'.  He promotes CCC by introducing conundrums on talk shows that show up on YouTube and break the internet.