You're a single data point, so I'm not sure what your conclusion could even be.
That android should not be by default tracking every user and sending a of that data to google since most users aren't aware it is even happening and most users have no use for this data. They know where they have been.
You're cherrypicking. A user does not need to know what or how much data they produce in order for that data to do useful work for them. I've already explained why a recent location history could be useful to a location-suggestion algorithm.