You don’t know Germany, you know Berlin.

You don’t have insight into German lifestyle, you have insight into that one woman’s family’s lifestyle (and only less than a year, you’re not a family member at that point).

I'm not claiming that I know all of Germany or all Germans, I am just refuting GP's guesses.

Also, she wasn't the only German that I've met and it wasn't the case that I only met native Germans through her personal network. I also worked at Deutsche Telekom and Mercedes Benz. I've had the opportunity to interact with lots of people outside of the work environment.