Actually, you can enable it, at least I think you can. I suppose all VR content on the internet uses WebXR which is disabled in the Vision Pro, but you can enable it in settings. Here is an article about enabling it

I don’t. But I have never used it, nor do I intend to do so in the future. From what I heard I would hate it too if I had used it.

Well, there are at least twelve of us