Something kind of weird about this besides all the ways it is more indirectly incorrect is that fundamentally this guy seems incredulous about the Holocaust being the default reference for genocide, but for a Zionist to say that feels a little absurd when a) Israel historically has pushed for education on the Holocaust in the west (e.g. I think in the 60s in America) because it tries to use the Holocaust to justify its existence in west-facing propaganda and b) some of the most prominent and dedicated zionists in the west historically, like Levi, were/are big on "Holocaust exceptionalism," the belief that the Holocaust (defined as the killing of the 6 million Jews and not any of the other genocide) is uniquely bad and, functionally, that comparing any other genocide to it is basically minimizing the Holocaust.

So him calling the comparison inappropriate makes sense (it's totally wrong, but it makes sense he'd say it), but him acting like it's inexplicable that we'd use the Holocaust as the central reference point for genocide when Zionists themselves ensured that it was so heavily emphasized in public education and public discourse is weird.