If the German Parliament is concerned with the declining population of a future Germany, and somehow think it could be restored by importing a completely different culture, they have taken up residence in Cuckoo land. Germany shall simply cease to be Germany, and become a new Caliphate unto itself, and the existence of all that was Germany shall be swept away like the snow in the rain.
Who remembers Chichen Machu or Angkor Wat? What does Stonehenge even mean?
The Pyramid Builders will be gone.
It's looking like most of Western Europe will cease to be Western Europe, given over to the Moslem hordes. War of one type or another is in their future.