I'm skeptical. But if I put my inner skeptic in the corner, what I'm most excited about is how it will affect ergonomics.
Most input happens in a (typically horizontal) plane, but the human body is better modeled in polar coordinates. It's called "tech neck" because we've attached a screen to the input plane and then end up hunching while we look at it. Decoupling the two, if we can pull it off, will help a lot of people.
That's going to depend pretty heavily on what you're doing with that computer on your face.
Ergo problems typically come up when you're assuming the same posture for long periods. If there are no other constraints to lock you in (e.g. desk and monitor), then I expect there will be much more moving around (perhaps even explicitly encouraged by the OS).
Whether this offsets the weight-on-head thing... time will tell. Whatever the problems will be, they'll be different problems.
Most input happens in a (typically horizontal) plane, but the human body is better modeled in polar coordinates. It's called "tech neck" because we've attached a screen to the input plane and then end up hunching while we look at it. Decoupling the two, if we can pull it off, will help a lot of people.