Do you have an 8k TV?
Even if I had one I wouldn’t bother with 8k30, to me the smoothness of video is important and I wouldn’t want it less than 60fps. 4k at 60fps to me is better than 8k at 30. But each to their own - I can understand if you have an 8k TV (for some reason) and want to exploit its resolution and actually have some content to play on it !