A decade from now integrated graphics will be perfectly capable of doing high framerates at 8K. The human eye cannot see more than 8K (like we hit the limit with 32bit colour and 192khz sound).
Heya! I'm in the same boat with your posts (I run integrated solely these days and Vega does a superb job with my older, emulated, and simpler modern titles) but I have to be that guy for a sec (sorry lol):
I'm not the biggest fan of 8K as it's only the most perceptible when viewing really close or if you have an extremely large display (compared to 1080/1440p => 2160p) so it taxes hardware unnecessarily for simpler tasks. Technically we can perceive 32K if possible, but only under conditions.
A high dynamic range bit depth for colour, absolutely.
For sound, we (literally) can't hear anything above 44.1khz, but I'm glad that 24bit audio is available for a wider dynamic ambience. The limit at this point is 2.82mhz, and debates of sonic frequency aside, it mostly exists for proper audio mixes to push releases on to. There's no real reason a redbook CD can't sound as nice, but they're mostly mastered for car stereos and AIO Hi-Fi's (except in Japan and old West Germany releases).
It's largely impressive how far humanity has pushed the envelope, but resolution and audio has been in snake oil territory for a bit
Oh and also, I look forward to the handhelds getting the new chips and RDNA the most! Pity they're not ARM / RISC-V but who knows what the future holds (like insane batteries negating the draw required etc.)