I recently ran some VR detection tests and for whatever reason, I didn't find any browser where webvr.iswebxr returns "true" while webvr.iswebvr continues to be "true" -- not even Firefox Reality or the Oculus Browser. The reason I tested was in the WebVR documentation on MDN Web Docs they state, "This feature [WebVR] is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes."
As long as our tours keep working, who cares, I guess. Or.... are there problems on the horizon.
WebVR/WebXR test page.
This is using v1.20.5.