I think their internal definition of metaverse is probably less literal than people in the media seem to picture - I think they are actually betting on the future of however people communicate, whatever that ends up looking like, be that WhatsApp, social media, VR or something else entirely.
Even their presentation showed that with a solid mix of different ways of communicating and I'm pretty sure that wasn't just accidental. On one level its nice to see a much more expansive definition of metaverse (which IMO already exists) but on another terrifying that FB wants to be part of basically every human interaction.
