
No it’s antisemitic because you are conflating the existence of the state of Israel with an ongoing war. You also seem to fundamentally misunderstand the defense credit Israel receives from the US. It’s antisemitic that you assume someone who believes in the existence of Israel and its continued existence also means we support death or suffering of Palestinian civilians. An assumption you have so willingly made.
i think people call it a blood libel because accusing Zionists of supporting things like committing atrocities or sniping children on the basis of them being Zionists when Zionism in no way necessitates supporting those things (and some forms necessitate opposing them) does kind of sound like blood libel
it’s not antisemitic to say israel does horrible things. it edges into potentially antisemitic territory when you accuse zionists (a huge umbrella category with many different meanings) of supporting, liking, being inherently capable of, etc. those bad things when many are against them