A lot of you don't seem like Windows developers, and you're on the outside looking in on this issue. You won't learn anything about WinRT's failure by analyzing Microsoft's marketing.
WinRT became persona non grata in 2011 when Microsoft scared its WPF and Silverlight developers into thinking .NET would be shitcanned to appease the C++ fools, and that everyone would have to use disgusting HTML5 and JavaScript to develop mobile apps in the future. Understandably, they fled in large numbers and Microsoft doubled down on its foolishness, doing nothing until Build 2011 to even rectify the issue. Worse yet, even after the fact, WinRT has no real .NET code compatibility with the desktop, so you have to fork your code base and cannot leverage jack shit. This is the real reason you do not and will never see apps for the platform. They should have had Ballmer's HEAD for this.