the Majority on the B”D of Klal Yisrael (as the Brisker Rav himself stated) voted against this opinion and in favor of state with no violation of any oaths if given with permission , proper boundaries, and eventual religiosity of state etc..
So since the state has never, to our great sorrow, become religious, they did not hold it was okay.
Please, keep the argument on topic, that we owe hakaras hatov to those who save lives. Don’t try to justify a state founded to change the definition of the Jewish nation to a secular one.