Here’s why. The nominal Christians who inhabit Germany, Europe and the USA are not reproducing. They are birth-controlling themselves into extinction. The politicians see an opportunity for a lifetime dedicated loyal solid voting and donation block. So they give muzzards the guarantee of freedom from prosecution, money, lodging, food, clothing and telephone, so that they can breed prolifically to replace the nominal Christians who are good only for their money.
Reproduction numbers often rise and fall related to times of prosperity or inversely a lack there of. It’s no justification to promote Genocide.