[TimTheTinker]

Keep in mind that the display processor utilizes a foveated rendering pipeline, which appears to concentrate the highest resolution rendering where your eyes are focusing.

That doesn't speak to the overall resolution of the per-eye screens, however.

[ehnto]

This doesn't increase pixel density at the point it is rendering, since that id a limit of physical pixels. Instead it decreases the rendering resolution of peripheral vision, but even that still has the same physical pixel density.

I am pretty certain 4k per eye still isn't enough for monitor like text rendering but it is pretty good.