state of Israel is a genocidal ethnostate

You're now admitting that Israel is a Jewish state despite trying to claim otherwise for this entire thread.

Israel kills way more Palestinian civilians every day

Two wrongs don't make a right. Israel is doing horrible things, but it doesn't deflect from the fact that "death to Israel" is antisemitic.

Before the European colony arrived, Jews, Christians and Muslims co-existed in Palestine.

Well, they aren't coexisting now. Sorry, can't go back in time. We solve problems of today because it is impossible to make things the way they once were. And which "European colony" are you referring to? The Jews? I thought this wasn't about them? Dog whistle.

the Iraq invasion was ... informed by ... islamophobia

But by your own logic, I thought a government is different from the major racial/religious group of its people? We can't say it was Islamaphobic just because the people there tend to be majority Muslim, right? We'd need other context, like... above.

hardly the equivalent of an occupied people resisting that occupation

I never said that Palestine doesn't have a right to resist its occupation.

You've taken this argument far away from "death to Israel" not being antisemitic because you're trying to argue that Palestine should exist. I'm not saying it shouldn't, but it doesn't make you not antisemitic.