Yamauchi is exactly right. 4K native is plenty and in PS6 or something in the future they can probably push various reconstructions to make it even better. At high FPS, reconstruction can look wonderful.
Aside from that, for PS5, 4K is perfectly adequate and the vast majority of gamers will not see the difference between 4K and 8K on normally sized TVs and even for those that do, the performance hit is way too steep to justify the incremental gain in picture quality.
Aside from that, for PS5, 4K is perfectly adequate and the vast majority of gamers will not see the difference between 4K and 8K on normally sized TVs and even for those that do, the performance hit is way too steep to justify the incremental gain in picture quality.