So much hate on the comments, sure their business model may be questionable but this guy has half the world's population using his social products. They are well positioned to pull something off in this space, however their walled garden model is going to limit their aspirations unless they change it.
I also feel like there is some confusion between the "metaverse" concept and spatial computing in general. In the article he describes working and collaborating in the metaverse, but you have other companies also claiming they are building a metaverse around gaming (Fortnite, Roblox). I think just like we have a clear separation between work and entertainment applications, there should be a clear distinction here too.
I could imagine there being a spatial computing layer (like the web) that facilitates both, but I think calling it the "metaverse" is confusing given the mixed usage of the concept. I'm not sure Facebook is the company that would build something as an open protocol layer, given their track record with building walled gardens.
I do agree with him that these possibilities are entirely dependent on better smaller hardware, that isn't a cumbersome headset. Entertainment seems like a no-brainer, given some success in the VR space with early hardware. The experience would have to be more efficient and productive than desktop and mobile computing to be adopted in the workplace.