I think, today already its not very likely that ETH switch to POS (same as assuming that Bitcoin switch to POS).
Except that Bitcoin never said it would go POS. Maybe it's a perpetual threat to keep miners interested.
Anyways back on topic...
The VRAM size gap between the 3090 & 3080 way out of line with the cuda core count difference.
I wonder why.
Yeah it's always annoying, although you pay the price for that VRAM. But 10GB should be enough to play in 4K with all details, having a bit extra would be nice (12GB or 16GB), but I don't really see the point of 24GB, for gaming at least.