Don't need 4K per eye, will be useless and a waste of money, I think that for the human eye, 1920 x 1080 on each VR display is enough, watch this:
That's absolute bullcrap.
For true VR you actually need something akin to 16k.
per eye thats how much resolution you perceive in the real world.
Not see. but perceive, there is an acute distinction between the two. The brain itself does a lot of world building and for instance exploiting how the brain does this is how we get optical illusions.
By tricking the brain to build an errounous world.
That video and many other regurgitated opinions keep cropping up around 4k.
One thing these have in common is they mostly come out of complete ignorance of 4k media, the display technology, the content that is viewed and the tight tolerances a 4k screen start to operate under.
That video you linked covers pretty much the ground between utter misconception, gross simplification followed by just being plain wrong.
It honestly holds as much water as an anti vaccer's argument, only it's harmless in the fact they simply don't buy 4k screens vs killing children.
I am -5 myopic and sitting 2.5m away from a 65" UHD screen and easily tell the difference between 1080p and 4K, because I have taken the effort to get both capable equipment to bring out the difference and have them setup well enough to boot.