According to the rules in the help center , the question Period of notice to quit job in Germany is off topic as being an expat is not relevant in this case. The community voted not to close it , but if we allow such questions, we should change the rules in the help center.
Agreed. I point to this question on keeping an eye out for off topic questions and the several questions that it points to as well.
It's going to be hard to get used to initially, I suspect, but it'll evolve. We just need to remain vigilant. That question you mention is now closed.