Humans lived in small groups, then villages pretty much until yesterday, easily for most of our species' history (99%+ of ~200k years). People knew everything about each other. And then gossiped to make sure nothing went unnoticed.
Contrary to the article, we probably still reveal less than we used to. People would bathe in semi-public places. That's not common outside of vacation spots any more.
Yes, advertisers bank on our nature. Gossip blogs bank on it. But they didn't make us that way.
OK, so the nature of information collection changed but we don't feel it. Some people can rationally appreciate it but not casual Internet users. And most nightmare scenarios are still hypothetical.
Imagine being subject of public hate because you expressed a unpopular view when you were young.
Many people, even here, are fine with that. On Twitter it's practically a part of regular programming.