Sometimes, I wish I could be gentile just for a little bit, so I could be shocked and surprised at the existence of antisemitism and treat it as something novel and unusual. Must be nice.
It's very easy to look at all this out of context, like the last 1000 or so years of history didn't happen. Like antisemitism exists because of Israel and not the other way around. Israel exists because the rest of the humanity has proven itself utterly unable and/or unwilling to ensure the basic, physical protection Jewish people. Over and over and over again.
Calling for the destruction of the State of Israel as a Jewish state is antisemitism. It doesn't matter what form that takes. It doesn't matter what language you use. It doesn't matter if you cloak it in "decolonization" or "one-state solution" or "everyone should get along" or "a state where it doesn't matter if you're Jewish or Muslim." If the logical conclusion of your argument is that the Jews should not have their own, Jewish state, it's antisemitism.
And gentiles need to stop talking about what antisemitism is or isn't and need to stop trying to define it. Rashida Tlaib or the Queen of Jordan are not the arbiters of what antisemitism is, of who is a Jew, or of how Jews feel about the State of Israel. None of this is new. These are all well-known, tired anti-Jewish tropes and believe it or not, we've seen and heard them before.