I'm not sure to be honest. Of course, most people can only evaluate the stereotype, because you only know how the people are if you live there, but there is still truth in it. For instance, what socionics.us sees as the "dominating" IE in the
ethnosocionics section is Ti. I think this is a good choice. I guess I'm not even perceive it in the same way as a stranger would, but the people take rules and laws extremely serious and literal. The bureaucracy has much influence and everything is so comlicated if you want to get something done. There are rules for everything because people seem to believe everything turns into chaos if it's not specified which kind of shingles you're allowed to put on your roof.
Some people might have a good social conscience, but this is still a society which is based on performance. You work to be richer, have a fat car and an own house with garden. German TV often shows low-income and socially weak people for entertainment reasons. The rich are admired (mostly the self-made of course) and money is an integral part of life. (Maybe I'm stating the obvious, meaning it's the same in almost every country. Maybe, I don't know)
The Ineffable said he knows someone who seems to have a Finland-fetish of some sort. Coincidentally, Finland got Si in the same ethnosocionic article I linked above. Germans have that stereotype of the relaxed northern european people who just enjoy life and don't care too much about achievements in a material sense. I'm not suprised that many people in the country can't identify with that constant striving for more. More exports, more economic growth, more of everything. Take a look in the news, that's what it's all about. That's why I think many Germans either live a life focused on their careers (including family, the kids have to go to the best schools ect.) and have a hard time to relax and other "unproductive" things or, if they don't qualify, settle for constant partying and rather superficial pleasures.
But it's all a little difficult as so many different people are compressed in so little space.