Please don't respond to flamewar comments by perpetuating the flamewar. That just damages this place even further, and the site guidelines specifically ask you not do:
"Don't feed egregious comments by replying; flag them instead."
If one person thinks you're an asshole they might simply be wrong about you. If everyone in the world thinks you're an asshole then you, almost by definiton, are one.
There's a reason why there's a separate word in most languages for "anti-semitism" but not for "anti-italianism" or "anti-brasilianism".
I'm unfortunately not surprised - there is a strange "intellectual dark web" bent among the HN crowd, despite it being transparently pseudo-intellectual garbage.
I see you are not even pretending not to be antisemitic. Most antisemites hide under cover of "anti-zionisim".
And to other people reading this, this poster seriously thinks that antisemitism is because "all Jews are assholes". I'm truly shocked to see such things on this site, although maybe I should expect that.