What's the meanest thing you can say to someone really dedicated to their work?
Your work is worthless.
Funny thing with people's expectations for consistency across totally different forms of media and target demographic.
I am Jack's consistent disappointment that my coworkers don't live up to the discourse standard that HN accustomed me to.
Have you watched "Comedian"? It's a documentary which follows Jerry around as he struggles to re-enter the world of standup comedy. It was released in 2002, so this is just a couple of years after his show ended.
He clearly is not happy and is extremely hard on himself.
One quote I remember: after a show in a small club in New York with which he is very unsatisfied the club owner says something like "You looked like you were having fun", and Seinfeld replies: "That's my job."
I thought he was considered royalty among stand-up comedians even before the show? As judged by fellow comedians I mean
[1] I just want to say that the scene where Larry impersonates George is one of the funniest things I've ever seen.