No one in Germany (except neo nazis) would object to more Jews settling here.

> but hand waved the forced relocation 500,000 people in a population of 10 million in a much smaller country as just the cost of peace.

The West Bank is not part of Israel. And evidently the Israelis expect the same of 7 million Palestinians (if they aren't trying to annihilate them outright - see OP link of this thread).

> But it was a peace plan.

It still is. It was offered again several times, last time I believe by Qatar during the Gaza war.