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For macOS, 8K should have a larger screen. This 8K monitor is 32 inches, which leaves us with a very awkward 275ppi. 42" would be 209ppi, which is great for 16.5" from your face. 48" would be 183ppi, which is great for 18.8" from your face (my preference). But at 32" and 275dpi, that would be a 12.5" viewing distance, which is far too close for a 32" monitor. You'd be constantly moving your neck to see much of the sc…
What is the right size for 4K monitor and the distance from our eyes? I have Skyworth monitor at 27" already. If I set macos resolution at 4K, the default font is too small. My distance with the monitor is around 16,5".
Another great option is 22" nominal (a 21.5" 4K display has 204ppi), also running at @2x. This is better if you keep the monitor closer to the keyboard side of your desk, or if your desk is not very deep. These are hard to find, and even when you do they're likely to be a portable monitor. Asus has a page for a PQ22UC but I can't tell if it is no longer available, or no longer sold in the US.