This is ironic because in the opinion piece by Rabbi Hain published in the Columbia student newspaper, he complains that

For years, Columbia’s Palestinian freedom movement has differentiated between anti-Zionism and anti-Semitism, affirming that one can be critical of Israel without being anti-Semitic. But by using the October 7 attacks as a rallying point for the movement, attendees of the campus rally can no longer argue that their activism differentiates between the two. They are now saying the quiet part out loud: Dead Jews don’t matter.

So here he’s trying to accuse pro-Palestine students for conflating Anti-Zionism and antisemitism, when in fact groups like the Anti-Defamation League and American Israel Public Affairs Committee have been doing this exact same thing for years! And now even the US Congress is in on the action.

This is precisely why conflating to two is wrong: it dilutes the term “antisemitism” so much that people start to roll their eyes when they see it being weaponized to silence criticism of Israel, which then makes it harder to protect Jewish people from actual anti-semitic attacks.