I don’t know that we can outright dismiss anything based on 3D TVs not taking off. I’m certainly no fan of Facebook attempting to own this space, but to outright dismiss the whole concept because of the poor sales for 3D TVs seems naïve IMO.
I'm not sure the general public at large will like VR, either. It's disorienting. And if strip mall Lasik wasn't enough to tell, we don't like wearing things on our face. That will -never- change.
I remember going to a real 3d movie as a kid, but I forget where. Some movie studio park, probably. It was only 10 or so minutes of Hitchcock's 'The Birds', but wow was it amazing. Too amazing. I remember feeling real fear to where I'd take the glasses off for a few seconds, people were screaming, many took off their glasses before it was over.
Not sure if this relates to the metaverse, just sharing an anecdote.