I don’t think being against giving back land has anything to do with Zioninsm/anti-Zionism. The Satmarer Rebbe was also against giving backthe land. He said that at this point it would be dangerous.
These seemingly conflicting anecdotes are only confusing for the binary-minded individual. I’ve mentioned here often that the classic approach of the Chareidi world was not this way or that. We had a problem with the group of founders, and perhaps even with the founding — at the time, and we don’t agree to all the ideological weight put on the state. But this is not about being anti-Zionist, it is more like non-Zionist.