>Human vision is about 576 megapixels

it's really not, we don't even have that many vision cells per retina. You can find this figure if you extrapolate the density in the fovea to the entire field of view. But in reality, the density of color cells drops off sharply outside of the fovea, which only has a few degrees of FOV.

Do the test: focus your eyes on one word of text, without moving your eyes, how far can you read the words around? our vision is really really blurry outside the center, we just don't realize it.