I'm guessing that sure, a lot of folks wouldn't care, but I would posit that the majority of the populace using social media even is NOT aware of the massive information collection going on, nor how it is used.
I doubt the difference is awareness so much as caring. Germany, in particular, is extremely sensitive to privacy reasons. What's more interesting is why the populace of some countries care so much more than others. German motivations seem obvious... but Russians would seem to have almost as much motivation and they're heavy users of social media.