Is it an extension of the idea that bathrooms aren’t just functional necessities but spa-like focal points of our sanctuary-like homes? Or has the erosion of privacy in our public lives just made us all more comfortable being overexposed, even at home?I like it. No mention at the link of where the toilet is, and I assume it goes in a small space behind a door. If I'm right about that then it's about how someone bathing or shaving wants to be interacting with someone who's reading in bed or watching TV or whatever. It's similar to wanting the walls removed from your kitchen, so you can cook while hanging out with (or keeping an eye on) people in the next room.
ADDED: I've seen so many TV real estate reality shows where everyone wants an open-plan kitchen/dining/living room area that I can't help thinking it won't be long before that starts to look like what all the boring, conventional people have and they'll start tsking about how it's "dated," and the reality show designer will be amazing the clients by building walls.