Let's play a game: Show me you are German regardless of your passport
Show me what you've got!
Personally, I was offered a giant plate with lots of different belegte Brötchen last week, beautifully arranged. As a German abroad (and too lazy to make it myself) I wolfed down three pieces with Mett before even looking at the other options. Not even a little bit ashamed. My non-German partner was slightly grossed out.
If that doesn't convince you, I still have a German liability insurance despite not living in Germany for 5+ years.
Funny thing is, this kind of bowl has been popular all over Central Europe, Eastern Europe and even South Korea. And in each of these regions, people keep believing that this bowl was typical of their country.