It makes sense for an iPad.
I really believe this is an interesting future where MacBooks would be only for graphic designers and people who need maximum power.
- Folded = Tablet mode.
- Unfold as on the article picture = "ultraportable laptop mode"
- Unfold in portrait mode + attach some magnetic full size keyboard + trackpad = big size screen (a bonus would be: use macOS in this mode).
I really believe this is an interesting future where MacBooks would be only for graphic designers and people who need maximum power.