If you actually try and find proof of the 8GB fiasco, there's mostly one source that put together an artificial scenario where they pushed a bottom end card to 4k on newly launched console ports which then got optimized.

NVIDIA said as much, released a 16GB version, and lo-and-behold it's absolutely pointless, even performing worse than the 8GB at times: https://www.tomshardware.com/reviews/nvidia-geforce-rtx-4060...

Most graphics cards are still under 8GB of VRAM, and raw numbers of memory storage mean nothing for performance in isolation.