I wonder how much of CIA spycraft has been made obsolete because of social media?

In the past finding out who someone's family, friends, interests, political leanings, where they travel, and skills might involve sending a human to secretly follow them around. Now you can just see who their family and friends on Facebook are, look at their daugther's Instagram page to see where the family has traveled, see their comments on reddit to know their political leanings, and looked at LinkedIn to see what skills they have.