Github probably considers the "depth" of git use by the average user to be one of its KPIs. Git is extremely powerful, if you are only doing checkouts and commits you are under-utilizing the tool and also underutilizing the service. So it's smart for Github to build tools that lower the bar for a) understanding git, and b) using git's more powerful features. Useful metrics would be things like the percentage of users…
About which powerful features are you talking about, does anyone have a link with some more in depth informations?