not OP but it does seem like you're nitpicking details instead of engaging with what seems to be the intent of the response: AR/VR has come an incredible distance since DK1, the last 10 years have seen it go from a barely-discussed completely unavailable/fringe dev-kit-only technology to being an clearly viable spectrum of mass-market products.

edited: grammar. still feel like I've failed to produce readable english, but I'm giving up