I remember working the university computer helldesk in the late nineties and repeating such a joke to the smartest white-bearded Unix wizard I've ever met. He rattled off five or six more jokes about lisp, and then proceeded to explain the AI systems he used to work on, and why it was his favorite language.
Having never really coded in lisp myself, I was immediately ashamed of the fact that I had been thoughtlessly making light of a thing that others valued. And years later, I'm atoning by trying to use Racket (sometimes Clojure) whenever I can.
So, I could just be projecting. Likely, I am. I would love to be wrong, at least.
And #5648, but I was a lurker for some time before a friend convinced me to register.
EDIT: but yes, lisp hate meme was probably firmly late 90s
Sadly, I assert that this being the main irritation of LISP is one more of fashion than it is of actual applicability. Sad, because I do have pride in our communities to want them to be above fashion. Most people that "hate" LISP have never written a single line of it, ever. Nor will they ever do so.