[jethack]

If you put a screen 1 inch away from your eye, your eye can't focus on it properly.

To adjust for this, the optics in all VR headsets are set up so that the "focal distance" is around 1-2m.

Articles aren't really addressing this concern because this kind of eye strain has been a "solved problem" in the VR space for a long time, so any tech reviewers wouldn't pay attention to it even if it's a good question.