"Every app since 2012 has been building these shadow social graphs." No, not every app. There are still open source apps who usually do not do this and there a

"Every app since 2012 has been building these shadow social graphs." No, not every app. There are still open source apps who usually do not do this and there are probably also some proprietary ones with ethics who have not given into it. But that this is the default and there is no big outcry is probably because allmost no one outside tech circles understands anything of it, or just throw their hands in the air.