There's no such thing. The whole purpose of DLSS3 is that it's never limited by the CPU because the process occurs only in the GPU.
N+1 generated frame only depends on rendered frame N and motion vectors, it never travels back to the CPU.
And if you apply frame generation of 30FPS you're always going to get pretty bad input latency. Frame generation is good for 50FPS and up, to get higher fluidity out of low-latency scenarios. It's not going to help the 4060 Ti and its terrible frametimes when it runs out of VRAM.
TLDR, DLSS3 fits the 4090 and 4080 just fine, but it's mostly worthless for in the 4060 series' performance range.
"No doubt, you can find edge cases where 8 GB will not be enough, but for thousands of games it will be a complete non-issue, and I think it's not unreasonable for buyers in this price-sensitive segment to set textures to High instead of Ultra, for two or three titles"
$400 is
price sensitive now?
Asking people to set textures to High instead of Ultra on 1080p on new $400 GPUs is fine?
And people are buying $400 graphics cards in 2023 to play... thousands of games launched prior to 2023? Longevity and looking at VRAM usage of same-year titles isn't even an issue now?
That single sentence is like a high-school reunion of bad advice, wow.