I don't know what this article is really talking about. Yes lots of people hyped it, but it's still a relatively new platform, and perhaps also a new kind of medium, once more peripherals become mainstream. I have been buying VR games and although the don't have the depth of other platforms mostly because of hardware limitations, it's definitely making progress.
Proper VR worlds will become mainstream like MMOs have, it's just a matter of time until all the parts become integrated well enough.