If you think that attitudes on Jewish sovereignty among everyone – gedolim and non gedolim alike – was not impacted by the Shoah, you are being foolish.
The destruction of 2/3 of the Jewish people in Europe was ample reason for anyone to take a second look at their rationales. Any one who didn’t consider the change in circumstances post war would be like someone who stubbornly determined to continue walking as if he had two legs when one had been amputated.