shmoel- first of all, your statement that “living in eretz yisroel everyone holds of” is incorrect. The satmarer rebbe zz’l told his chassidim to leave eretz yisroel and did not believe that it was a mitzvah to libe in eretz yisroel (see some of the comments here of health and vochindik).
Secondly, the belzer rebbe, the vishnitzer rebbe, the gerrer rebbe, the klausenburger rebbe and many others all came to eretz yisroel when the medinah was being established and all of them came after the Holocaust. If they believed ni the satmarer shittah ,they could have gone elsewhere (where the satmarer himself went). They chose to go to eretz yisroel and accept the medinah wholeheartedly. I do not say that they accepted its philosophy or the state of yiddshkeit but they clearly accepted the medinah and still,today, participate in voting and other aspects of israeli life.
Yes, some of the old yishuv were against the medinah but they are very few today.