I don't fully understand that this comment is downvoted. He has a point there. We are all being tracked, just see your history [1] on the google website.
It tracks the websites you've visited, the video's you've watched, music I've played, things I've searched, App's I've used (Camera for example), directions I've searched (google maps), ads I've seen, cards in my feed (google now), my location history (actually very cool and very scary)... There are probably a LOT more metadata they have on me that I don't know
I mean, they have a LOT of my data, they know probably more about me that I know about myself.
Of course we aren't blocked for using any apps or viewing files, but they know that we are using and viewing the apps/files. I think it's in their best interests not to block anything, as this way they get a lot of information they otherwise would not get.
You can compare the "my activity" with "Trace Viewer". It's just a matter of perspective. Don't get me wrong, I don't approve the NK way of blocking everything, but the tracking of the data happens in the West already too and we just "accept" it.
[1] https://myactivity.google.com/myactivity