Avram:
There are very strong anti-Zionists who live under Israeli rule. One has nothing to do with the other. The Zionist usurpers came and decided to create their abominable State in Eretz Yisrael.
That is not, in and of itself, a reason to leave Eretz Yisrael. But, at this point, the Zionist shmad is becoming so unbearable that some Yeshivos are indeed contemplating leaving.
Israel surrendering to Hamas is obviously not either what they should do.
But there are many theoretical possibilities in between, CH”V, shmad and hisgarus baUmos versus large-scale suicide.
But what there is to practically do all has nothing to do with Zionism being (just as practically) idolatry.