At some point in the month those accounts make some kind of connection with Facebook’s auth system. Those accounts are almost certainly not 1:1 with people.
The real usage of Facebook is probably a fraction of that number. They have huge incentives to mislead about those figures.
A much better stat would be the number of individual people (eliminating known duplicates and businesses) who post an original post to their timeline each day, each week, and each month. Facebook don’t post those figures because they would be pretty darn low.
Just stand in a subway and see what apps people are using. I’m in Southeast Asia and it’s Facebook or Line all the time. I almost never use it myself any lots of friends don’t either but these things will be correlated with my own preferences by nature. I also don’t read tabloids or watch reality tv but I know people on aggregate consume those a bunch.
