It’s not about holding grudges, it’s about survival. Jews went through expulsions, pogroms, and the Holocaust and even now there are people openly saying they want us wiped out. Forgiving doesn’t mean pretending that’s not real or letting our guard down.
Yes, precisely about survival. To be a Rusyn in Austria-Hungary literally meant death. To be a Ukrainian in Poland was the same. We all strove to get to where it seemed our Motherland was, but even in the Soviet Union it was impossible to find it (a strange construct it was), and there was no place for Jews there either, by the way. Even now we are observing the aftershocks of its collapse into nation-states and the subsequent departure of Jews with the understandable motivation of "as far away from the war as possible"- and here they are met by a grim reality and the same war. For a place that Moses staked out a thousand years ago (and whether he existed, spoiler: he did not), and if he didn't, then welcome to Africa, the cradle of civilization, fortunately it's not far away.