We're following the trend of simplicity. Minimalistic design is what most programs aspire to present their potential users with. One-purpose and absurdly simple apps (see YO) make crowds fascinated and you start wondering "Why didn't I think about that first?" This is part of the policy that Apple follows: take a complicated app or device, remake it so that the most confusing processes perform under the hood and the user gets access to everything in just a few taps. The same is true for some of these Windows apps.