I really don’t think Jews would be treating Poles the same way they treat Palestinians. But in 1945, when this process would have taken place, many of the areas ceded to Poland had very little Polish population. And most that were there were in Upper Silesia, so Poland could have just kept that. The rest of the territory ceded to Poland was primarily repopulated by Poles fleeing the Belarusian and Ukrainian land Poland had stolen in 1921, not Poles that were already there.

Regardless, that’s if a Jewish state was really necessary, which idk.