You didn't play Far Cry 6 then on your 3080? I can tell you it was a stuttering mess on my old 3080 at 4k when it bounced around 10gb Vram usage and was unplayable and that was 2021 title, It's only going to get worse as GPU performance increases and higher quality textures are used.
Played it for 15 minutes or so on £1 trail ubipass. Uninstalled and never touched it again. Lol.
That was the only game as I recall that had vram issues back then if you installed the optional textures.
In my experience, by the time a card is out of vram, it is way out of performance. Case in point 3090 users who are selling and upgrading to 16GB cards.
All those games I listed above. Absolutely zero vram issues.