Offsprings facing judgement for their parents is fucked up. They didn't choose their parents. As for getting the Palestinians justice after their genocide: realisticaly we can only try to make the right wing Israelis see them as equal humans after a few generations or support Israel's left so they push them out. To do that we have to keep telling the Palestinians story.
As for the real history beeing erased: as I currently see it the support for Israels actions is dwindling in the western countries. So I don't think the narrative beeing replaced is realistic. There also is too much evidence for what happened. Israel isn't all powerful.