>> Unless you life fully alone, there is definitely a different level of vulnerability and isolation in effectively blindfolding yourself that is very hard to ignore. Even after months working daily using these devices, it still felt awkward to sink into one in an open plan office. I can't imagine doing it in a living room while your family is around, or near roommates, or a plane.

Tonnes of people live alone. A huge normal of people now work from home. If you're using it as a monitor to work like suggested in the post you're not going to be doing that around family/roommates anyway even on a laptop. You're going to be in a room by yourself.