I'm excited by the idea, but repelled by Facebook's vision of it. An open-standards metaverse would be interesting, especially with the prospect of infinite AI-generated content.
Folding Ideas released an excellent video essay recently examining the concept of the metaverse and how it suffers from somewhat of a “No True Scotsman Problem” https://youtu.be/EiZhdpLXZ8Q
Afaik Meta is a founding member of The Metaverse Standards Forum: https://metaverse-standards.org/
Not sure how much of it is built into Horizon Worlds.
