Lacking features are due to SteamVR and Open XR currently not supporting those as there haven't been any need till now. People will add some or all of those outside the official driver channels in time but it's the games that should support them so mods are need as well.
HDR in Windows is a hell all in its own in general, I don't support this Sony hate simply because they leave devs on PC to figure shit on their own and not waste time beyond giving an adapter in an okay price range and basic functionality.
In its basic functionality, PS VR2 is still wonderful with its resolution, pixel per degree, FoV and true black OLED panel. Stop this hate train people.