Jews have lived in Europe for 2000 years. Who's importing whom? https://jewishstandard.timesofisrael.com/what-disraeli-actua... "In the course of his unrestrained invective, he referred to Disraeli’s Jewish ancestry. Disraeli replied, ‘Yes, I am a Jew, and while the ancestors of the right honorable gentleman were brutal savages in an unknown island, mine were priests in the temple of Solomon.'”

I don't think we should apply the same standards to Jews that have been in Europe for a long time, and Muslims that are a very recent addition, especially when you compare the numbers.

South-Eastern Europe has had a large muslim (because Ottoman) population for centuries; which part of Europe are you referring to?

Not every muslim was born outside of Europe. In open societies, people also change religions even if their home country was dominated by a different one.