That's the idea. I find that so much time is wasted at mapping parties dealing with geometry. And that's a steep learning curve for newcomers. The fun part of mapping is capturing names, numbers, and types of buildings. Also point features like statues are easy to capture.
I formed this opinion after trying to split one building in Hyattsville into n stores. It's hard to do that an preserve the geometry. It's hard!
Also I feel users are more invited to update a map of unidentified areas than an empty map of roads.