You are probably right if we take Poland. In the Soviet Union, however, Jews were assimilating rapidly. I would like to know how it was in Hungary, I read it was not too anti-Semitic but am not sure.
I know that in Czechoslovakia, after WW2, the Czechs didn't want Jews returning to their homes. I know this from a museum in Prague. That gives you an indication of the feeling in those countries. Even after what had happened, Eastern Europeans felt Jews were trouble and should be living elsewhere.