OpenStreetMap is not a picture of the world from above, it is useful data for navigating the world which is rendered into a picture and much more.

And to those with the time to micro-map, I can think of more useful uses of that time. I also hope they plan to update their work as the truth on the ground changes. I know I don't have the time to maintain it. 

https://wiki.openstreetmap.org/wiki/Good_practice
