I've built too many experiments to attempt to make this visual wearable plane worth it, and if these devices try to do anything more than hands free reading, they are a worse experience to achieve the same task.
Think about its 'most compelling' consumer use case - Lifelike Avatars in FaceTime. Which one do you think is preferred, cooking in the kitchen and wearing a headset, or propping your iPhone up and FaceTiming while cooking? Where on earth does it 'change the experience' to have a real-life like avatar? We have the 'life like' avatar right now with Zooms - and the reason Zooms suck is innately the human part, not the rendering part - most meetings could be emails or 5 min phone calls.
Everyone had spreadsheets and publishing needs (Mac), portable music players (iPods), cellular phones (iPhone), headphones (AirPods), home wireless music speakers (HomePods)... think of fitbit / pebble, 1980s VR and then todays VR ?