AY
Many charedim use the arguement of gedolim who before the war rejected zionism (Like Rav Elchonan Wasserman) and compare with post war Rabbanim
Some did change their mind. The Maunkatcher Rebbe was famously against zionism, but his son after the war changed his mind and became and zionist (and left his chassidic Yishua , but remained charedi) because of it