If it's such a fake, why did nobody in my father's neighborhood have any older siblings, aunts, grandparents, or uncles? Why were practically ALL the families in the neighborhood, those of Jews who were in Europe during the war, SECOND families -- made up of one man and one woman who met after the war, and children born after the war?
Why were practically all of the Jewish immigrants from Europe to Israel, and elsewhere for that matter, single men and women -- only rarely brothers and sisters or married couples, even more rarely couples with children, practically never extended whole families? What HAPPENED to all those people?
You don't seem to have answered this question.
My grandparents, which had nothing at all to do with the Nuremberg trials, needless to say, told my father they Nazis killed most of the family, which was the reason things are like that. So did other people in the neighborhood tell their own children. Did my grandparents lie to him? Did everybody else in the neighborhood lie to their own children?
Oh, and something else: after her death, my father found my grandmother's diary. She never told him about it. It describes what happened -- how they were put in the ghettos, how her family was killed, how they escaped from this "action" (round-up for slaughter at the death camps) and from that raid, etc.
I suppose everything in that diary is a lie, written 50 years in advance and hidden, with the goal of convincing people after death that it really happened?
You don't seem to have answered these questions, either.