Of course Linux is better for custom, purpose-built hardware. That’s like, its main advantage for the commercial sector.
Edit. By software I’m talking about in game features.
Like FSR and such? That’s available on Linux (FSR 1.x is integrated into SteamOS for compositor-level upscaling). AFAIK AMD does not officially support FSR on Linux but it’s written in a way that it should work with minor integration work. It’s written with cross-platform support in mind, given that it’s targeting PlayStation etc. als well.