6600XT reporting in. Spent a few hours on Windows and WSL2 setup attempts, got no where. I don't run Ubuntu at home and don't want to dual boot just for this. From looking around I think I'd have a better chance on native Ubuntu.
AMD just doesn't invest in their developer ecosystem. Also as you use a 6600 XT, no official ROCm support for the die that you use. Only for navi21.