Speaking as someone else who had a 7900XTX, this was sort of common. It’s just that a lot of game devs aren’t designing their games and apps with anything AMD (maybe Intel too) GPU related. The market is mostly Nvidia so that’s what their games are looking for when it tries to search up compatibility.
Most of the time, it’s just that they don’t officially support it but it still runs without any issue. Since their game is looking for “Nvidia” but sees “AMD”, it’s assuming you aren’t using a compatible GPU. Even more so because Alyx came out in 2020(?) and the 7900XTX came out in late 2022 so the game really doesn’t know that this GPU exists.
The game/app runs without any issue. The game just doesn’t have this specific card to check for a quick compatibility and throws this error as a “just in case”.
There were some rare times where the game/app legitimately did not run. The Oculus app was one of these. VR worked perfect fine through SteamVR but never with the Oculus app since that app was designed for Nvidia GPUs.
Haha I am just now realizing what your comment said. I guess I was more tired than I realized last night.