Many of the opponents of Zionism lived before the State of Israel was established. Some changed their views after it was established. They still opposed the secularists, but the idea of Zionism and having a Jewish state was separate.
There is a letter written by Professor Zvi Yehuda, who was a student of the Chazon Ish. In the letter (written to his daughter, and published in Tradition, Summer 1979 Issue 18.1), he writes about the conversation he personally had with the Chazon Ish regarding Israel after its founding. He says the Chazon Ish davened for the success of the State. He also says that when asked if Israel could be leading towards Mashiach coming, the Chazon Ish did not dismiss the idea – he simply said that it was too early to say, and time would tell.
R’ Isser Zalman Meltzer was a member of Chovevei Zion before the State was founded. He, along with R’ Moshe Mordechai Epstein, even helped to found a city in Israel (then part of the Ottoman Empire).
The fact is, the Satmar Rav was a daas yachid in his views on Israel – he opposed a state in any form, even if it would be under religious leadership. Most Rabbonim opposed Zionism because it was run by secular Jews, who were anti-religion. Religious Zionists also oppose this, and would prefer that Israel be run according to halachah. However, almost all now recognize that once the state was founded, it is better to participate with it, and try to improve things for the frum Jews.
People like Hakatan and Joseph keep referring to the early Zionists and the harm they did. Nobody is arguing against that! Religious Zionists also mourn the fact that they did that. But they don’t allow it to change their views on having a Jewish state. IY”H one day soon, the State will be run according to halachah!