This is no different to how many people behave on long haul flights anyway. Face mask on, eye mask on, ear plugs in. Isolated from everybody else as much as they can be, trying to sleep, and they manage it in isle seats.
Also, I remember TotalBiscuit talking about using an Oculus headset to watch films on a plane and it being a better experience than the screen in front for him (I don't quite remember why). So it's not a new concept and this device just makes it less cumbersome, I guess.
Many such system (that I've used anyway) play very low resolution movies, on bad screens, using the laggiest Android tablets you can imagine. And you have all the other things in your eyesight distracting you.
Not to mention that they pause constantly for in-flight announcements about duty free shopping, donating unused international currency, tray tables, dimming cabin lights, etc. That alone makes it worth bringing your own content on tablet or phone with your own headphones. If a host approaches about a meal choice, you'd see them through the headset. If there was an emergency, someone would tap you on the shoulder.
Also, I remember TotalBiscuit talking about using an Oculus headset to watch films on a plane and it being a better experience than the screen in front for him (I don't quite remember why). So it's not a new concept and this device just makes it less cumbersome, I guess.