AMD split off Polaris and Vega drivers last September; official ROCm support ended earlier but afaik you can still run ROCm on Vega?
Similarly worrisome for gamers is aging architectural features as devs catch up to hardware, i.e. mesh shaders in Alan Wake 2 supported in Turing+ and RDNA2+.
https://www.anandtech.com/show/21126/amd-reduces-ongoing-dri...