There is an aspect to this which may not be apparent on the surface - it is not just that the streets become a bit more unsafe, the schools become less like somewhere Germans want to sent their kids.
To pay for all the imports, the tax system becomes more predatory. It's not just the income tax rates, but the many rules and other kinds of taxes. It's a pipe with two ends, flows in one end and out the other, Umverteilung, redistribution, but not just to Germans but to "refugees".
Austria and Switzerland already offer friendlier taxes in some cases and then there's the more extreme low tax places like Dubai.
My impression is that Germany, or the former Prussia / Bavaria etc was seen as a threat from even before WWI by the "Anglo-zionists".
After my first period of time there it was already well apparent that there was something very special in the German culture for productivity and efficiency, which would easily outdo any other European culture on that measure.
That pipeline thing is a very sorry manoevre.
Forgive me, this turned into a tangent but I felt like I had to get it out.
There is a creeping decline in just about every layer of our infrastructure. Service in many places is just getting a tiny bit worse, the inner cities become a bit more uncomfortable and dangerous, and social institutions gradually stop performing their functions. One of them is the law. Many people have the problem that they view politics as a matter of mere engineering, as if things will work correctly if we just make the right laws and regulations.
The problem is that there is a clear issue of human capital involved in politics and social institutions. Germany has always had a comparatively dense system of rules and regulations, but because there was a human substrate of intelligent and honest people, so the system worked. That isn't to say that it couldn't have been managed better one way or another, but it had naturally grown out of a German sentiment of the importance of justice and fairness in terms of how rules are applied.
Personally, I believe this has been the root of the strength of the German people once you do away with mere IQ. German efficiency and productivity aren't necessarily caused by a German desire for work, in fact, people used to comment on the fact that Germans in the past had an easy time keeping up with Japanese and Chinese despite much fewer working hours, with Germans loving vacation, free time activities and day drinking. It's rooted in a principle of commitment to the common cause. Medieval European heroism is founded on the "pathetisch-erhaben"(pathetic-sublime) as Schiller called it, which basically means that you commit to the values and the good of the group regardless of immediate personal outcomes ("Pflichterfüllung"), fueled by the Christian trust in Godly rewards for selfless action. "Ritterlichkeit" (chivalry) follows from it, too.
Promoting conscientiousness while allowing for creativity, it's something that works wonders for a nation in terms of productivity and really any kind of success, making it seem almost effortless if enough people buy into it, but it collapses and causes despondency when it gets exploited beyond a certain threshold. That is the state of mind that has been fostered in Germans throughout the 20th century: Despondency. You work hard, you try to follow the rules you have been taught are correct, you try to be charitable, and then you get punished for it as if it was deserving of hatred.
A pathetic-sublime mindset can only really be restored by faith, ever, because it's the only thing that will lift an individual out of that despondency without a need for material rewards. Not to go off on too much of a tangent right here, but I think that is why God allowed for the Germans to be punished for rebelling against the NWO in WWII (outside of turning innocent souls into soap and furniture, of course). That they proudly bought into the notion of a pathetic-sublime without God, or in their mind even transcending God, which would be impossible.
Right now the Germans are in a phase of humiliation, where none of their once outstanding qualities can really benefit them in any material way. They aren't gone though. Whenever you see Germans leaving Germany, many of them start building businesses, restore communities in 3rd world countries, become top contributors to society abroad, teach, construct and so on. Their great qualities are still there, they are just hidden because Germany right now is being governed by lies and narcissism and degeneracy, which makes any notion of a pathetic-sublime, high trust society impossible. But I wouldn't put it past the German people to come back to that quicker than anyone of us might think, if only enough of them publicly repent.
As bad as the political situation in Germany is right now, if you look at the dissident movement, in which I have spent some time at this point, you see a spirit of commitment to fairness and brotherliness already re-emerging, and I think the repression helps keeping it honest and self-reflective.
The fact that the attack on Nord Stream 2 is going to destroy a lot of material wealth in the medium term will remove one of the biggest hurdles to authentic introspection among the Germans, which is decadence. None of the political catastrophes of the pat 60 years would have been possible if it hadn't been for the absurd decadence Germans could allow themselves to fall into while running on the fumes of their past values. Suffering is to come come for sure, but it will be a gift from God for the moral improvement of the nation. I don't think Germans will stop existing (although the mere number of ethnic Germans is at an historic low), because the basis for their identity is overall too strong to be exterminated. And they are a very resilient people.
Nobody can predict the future exactly, because it depends on the free will and the decisions of the people, but IF enough Germans find their way back to God, Germany can and will be restored, possibly better than before, since the Germans have had a strained relationship with religious adherence since the middle ages. No need for big fat backpills, those are against the Christian faith anyway.