The rest of the article is mildly interesting, but if you just took the bait from the headline:
On a technical level, Xbox One is essentially a PC using a heavily modified version of Windows, and this software simply translates native Xbox applications into a form that can run on standard Windows PCs
Addendum to 2: never believe that what they say is relevant to what’s actually happening here. You have a lot of faith that the people writing error messages knew what they were doing!