I will phrase it differently in the future, but I stand by the sentiment.
I look at it as a direct non-verbatim usage of Zuckerberg's own words against himself. After all, Zuckerberg already has this sentiment for everyone using Facebook - "Fucking morons" IIRC.
Now, what do you consider a contribution to the conversation? I've seen plenty of comments that do not do that and yet they still remain either highly-voted or at least not in the grey.
To object to the comment because it "doesn't teach us anything other than how you feel" is to say that any statement which conveys only "how you feel" is inappropriate for HN.
Is that really the way it works here?
What if he had said "I wish Zuck all the best!" -- would the moderators have come out against that too?