Speaking as someone that wrote some code that interfaces with the Magicshop API, it works nowhere near as good as described in the video. It's a simple color matching algorithm that gets easily fooled by trees and dry grass.
The project is a great start, but has basically been abandoned.
I think the more important point though, is that both the permission and imagery is there (and the imagery is very high quality) so there's various other projects that e.g. trace outlines of lakes from the imagery (again basic color matching) or identify tennis courts via computer vision etc.
The project is a great start, but has basically been abandoned.