One thing that is getting very clear is that Snowden/Greenwald are telling the story only from the view point of how they could/would abuse the technical surveillance capabilities that are available.

How these capabilities are actually used by people who are trying to get work done is irrelevant to the Snowden/GG narrative, and is completely ignored.

It’s like an arsonist telling stories about how everyone in the Fire Department is secretly a fire bug that like to watch things burn.