At least for Facebook, if the information is not publicly available via Google it’s because the content creator has decided not to make their content public.

At least for Facebook, if the information is not publicly available via Google it’s because the content creator has decided not to make their content public. Google very much can crawl information on Facebook and Instagram that people have made “public” As far as “social dynamics”, do you remember Cambridge Analytics? Why would I want my social graph to be publicly available. It’s bad enough that people have their contacts synced with Facebook.