No one is twisting their arm. If Germany passed the law, then they are accountable. To demand that the Israeli government not accept the compensation would be rude to the older German people who deep down are still occupied with purging their collective soul. Israel doesn't need the money. That is not what this is about.
Iran: IAEA visit to U.S. Senate damages UN neutrality (DPA)
from the article: Israel to seek another 1b euros Holocaust in reparations from Germany