A lot of the criticism is valid but it seems to me that many critics haven't experienced "embodiment". To me, that is the killer feature. Without it, the author is right, we already have the internet. I have a Oculus Quest that I don't use because there is not enough of that sense of embodiment. When the field of vision is extended to the periphery and the resolution is enough to not have the screen door effect, it will be much more likely to feel embodied. It's kind of mind blowing actually and the source of much of the quasi-religious fervor when some talk about VR.