"In Europe, people remember a time when you could be killed for having the wrong political beliefs or religion. The people who run Facebook and other big social media companies don't have that baggage, so privacy can be something of an abstract concept to them in a way it isn't in Germany, for instance, with memories of the Stazi and Nazis."
In many places, you can STILL be killed for having the wrong political beliefs or religion. A good enough reason on its own for having a bit of privacy when using the net in whatever form.
The comment about Facebook and privacy issues being a tad abstract compared to those who had clearer memories of the Nazis is strange, given that Mark Zuckerberg is Jewish. Not many people have a clearer memory of the Nazis than the average Jew. Not being snarky, by the way - I'm Jewish, too.