I met Richard Burton, an RAF cadet on a two-term course. I would have flirted more enthusiastically if it had not been for the horrid boils on the back of his neck.
It's always a Catch-22 situation. They hate you if you're the same, and they hate you if you're different.
Those who reject integration programs in the long term have as little right to stay in Germany as a hate preacher paid from abroad in a mosque.