8K is available yet 4K hangs on like a disease that killed someone dear to you. Why?

[bhampton]

My projector (JVC RS3100) can display 8K via pixel shifting.

Most of the over a 1000 hours I put on the projector in the first year left this feature off because I don't have any 8K content.

Sometimes though I experiment with it and my observations are

1. Pixel shifting of this projector looks fine. I don't see added noise. When I watch HD upscaled to 4K that doesn't seem to cause any harm to the image quality.

2. Upsampled to 8K doesn't seem to be much better than native 4K at least on my projector. What it does is hide some of the noise in the signal. Upconverting it makes it slightly softer in a unnoticeable way but less digital noise remains visible. The refresh rate is higher which makes for a better picture also.