As a heavy SteamVR user the poor Linux support is one of the few things keeping me from dumping windows on my gaming PC. Fingers crossed for continued improvements
I've had enough issues with SteamVR and instead use an openXR runtime called Monado. The result is that I have always had working async reprojection. https://lvra.gitlab.io is a great resource for linux vr.
Games that use OpenVR instead of OpenXR will have issues, like Alyx and The Lab. And you need a separate program for boundaries and rebinding controls.
Given that Valve has been one of the driving forces for certain gaming-related Wayland changes, I'm guessing we'll continue seeing this for a while.
(Funnily enough, some of these changes were things that NVIDIA first proposed that got rejected, but coming from an organisation with a better reputation people were more open to hearing it. Although I'd guess Valve were also more open about why the changes were needed rather than Nvidia's "trust us bro" answers.)
I got VR to work super smoothly with the new NVIDIA driver, on Wayland + KDE, using Alvr wireless. I can even monitor in real-time a project in development in Godot. I'm officially done with windows.