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

Nobody was missing out on anything. All of 343s Halo games have been garbage, but Halo 5 takes the garbage cake home.

The translation layer is awesome for every other game though.