Unlike you, I don't speak for others who rightfully oppose Zionism, or might just be anti-Jew for whatever reasons.
I am good friends with around two dozen Jews since decades, around 15 of them are Israelis - NONE of them is a Zionist, whilst the majority of them serve or have served as officers in the IDF.
A Jew and Zionists are two entirely different things and ideology. An Israeli Jew will very well fight for Israel and with the IDF - however this not behold in any way, that these Israelis are supports of Zionism policies "Greater Israel" nor their "racist" agenda.