he is doing the exact same thing that the Israeli government and corporate media have been doing when they call anyone who criticizes the Israeli government an antisemite.

I agree.

supermajorities of folks in all political parties support folks labeled as antisemitic, because we all understand that the antisemitic label is complete bullshit now

Antisemitism is still a thing - it just happens to be a thing that's perpetrated by those claiming Israel as 'the Jewish state' (and attributing their actions to those done by 'the jewish people') and by people who go along with that conflation. Supermajorities don't support antisemitism, they oppose Israeli apartheid. That just makes it all the easier for actual antisemites to cover under the same political rock and pretend that they're in the majority, while simultaneously leaning into the Jewish identity of the perpetrators of that genocide.

The Israeli government intentionally conflates anti-Zionism and antisemitism because it's politically useful for them. It allows them to use accusations of antisemitism as a cudgel against anyone opposing the genocide of Palestinians.

Just because Israel does it, and antisemites do it, doesn't mean you or I or anyone else should do it. There are huge numbers of Jewish people worldwide who oppose the genocide and oppose the Israeli government.

I go to a Passover seder every year that the host mother dedicates to the people of Palestine, that they may one day be free of their oppression and bondage just as were the Jews of legend.

You can oppose the genocide in Palestine without agreeing with this POS and generalizing your hatred to all Jewish people. Maybe consider that a large proportion of the public figures in the U.S. who oppose Israeli aggression, like Naomi Klein, Judith Butler, Ezra Klein, Bernie Sanders, Ben Cohen, etc., are themselves Jewish.