@bolded: You got a link for that?
Also, I said immigrants, not refugees. Though of course tons of these came with the immigrants during the heights of the Syrian, Irak and Lybian wars.
a) Germany already has this
b) I think that's true more or less for every country, especially on first contact with foreigners. Best advice would be imo to get those people of different culture to interact with each other to destroy the fears and prejudices on both sides.
c) Which is also one of the reasons why there are shortages in manufacturing jobs. In fact, the politicians are trying for decades to get German families to have more kids, why do you think they are pushing the KITAs so hard for instance? It's because they can't go out and say "fuck more, you're dying out! And without children we can't guarantee the pensions anymore."; that would be political suicide. So they're trying to incentivise the families to have more children, with Kitas (so they don't have to take care of them all the time), Familiengeld, and so on. Problem is that it's not really working. Germans (and much of eastern Europe) seem to become more and more DINKs
I thought you were talking about those people who came in 2015/2016 during the refugee crisis since you mentioned Merkel and her decision. Obviously not all of them got the refugee status in germany but all of them were asylum seekers.
a) So far there were only a immigration system for non EU academics but very recently a new immigration law was passed, i haven't looked into it but maybe our government already solved that problem.
b)But Germany does significantly worse than other countries
c) I know that they already tried many different things but as you said, they dont work all that well but it's also not a lost case, look at France, they have a fertility rate of 2.0.