Zionism, at its base, is the belief in Jewish supremacy between the Jordan River and the Mediterranean Sea, and just like any other ideology that subscribes to racial, national or religious supremacy, it is illegitimate
It’s not easy being Israeli and anti-Zionist. It’s almost impossible. That combination is perceived in Israel as treason, heresy, lacking any legitimacy. This has been the case since the good, old Mapai-era Israel, long before the dark days of Benjamin Netanyahu and Itamar Ben-Gvir.