It would be if I was German. Because if he gets social security and illegally has his permanent residence outside Germany (which you can’t do when you receive social security) then it would be my business. Because my taxes fund it.
You have had a 'thing' for Christian and his finances for some time. This is not the first time you have raised the issue. Your post is irrelevant for you are not German - so give it up! Christian's finances are his own affair, as are mine and yours. OK? Enough!