I'd give a lot to go back to my 20 year old eyes that could see pixels without special glasses. Sure I can't see pixels (well maybe I still could on an janky third party CGA monitor from 1983), but it isn't worth it. (I'd say save your eyesight, but realistically I'm not aware of anything you can do to keep it past about 45)
I think you'd have to sit further back than is otherwise natural (and then have the issue of legibility/lost workspace) to achieve "can't see the pixels" on this.
Sure it's 8K but it's 65", it's only got a PPI of 135. For comparison Apple (computer) displays and a handful of third parties that target Mac use are generally 200-220 PPI. That is can't see the pixels density, even if you smash your face against it.
220 ppi output with no subpixel rendering (ie modern Macs) has clearly visible jagged edges in angled lines and letters if you've got good vision or correct your vision to better than 20/20 (my case: I get headaches if I don't).
If you are coming from typesetting world, laser printers from the early 1990s did 600dpi (dots per inch), and that remains sufficient for smooth lines, though newer printers will do 1200dpi too. Going down to 300dpi printouts is crap.
Heck, newer Kindles do 300ppi and that can clearly be improved.
Apple's "retina", like all things in life, does work for 90% of the human population as advertised, but there's still a big number of people who have better angular resolution than what they target.
There's always "better" of course, but my point was more that "can't see the pixels" doesn't usually mean "I can't see the pixels if I sit back from the display a bit". When the iPhone 4 was introduced, no one said "what's the difference, I can just hold my (other phone) away from my face further and I don't see the pixels!"
Can you reference an example that shows this phenomenon with angled lines? I haven't had an eye test specifically, but my vision is generally fine, and I don't see the effect you're referring to, on for example a lower-case "y".
I have a 55" 8K and I can't see the pixels while sitting 2ft away. Everything is crisp and I have a huge workspace. For mac I use 4k native so 2x integer scaling.
I've used both. I quite honestly don't care. I've heard many people that share your sentiment. But some of us just don't. Visible pixels are totally fine for me.
I went back from using different displays in HiDPI to using a single 43” 4K screen set to 100 % scaling. Screen estate trumps invisible pixels [for me, at the moment].