Yes, the hinge is ridiculously over complex. Laptop hinges were solved about 20 years ago ...
What problem do they solve? ...
@daniielrp
I don't have my hands on one, yet, but the hinge design accommodates the ability to maintain tilt angle, detach the screen, and completely fold over 180 degrees.
I'm typing this from my MacBook Pro 15 Retina. Very hefty hinge on this one. Wobbles when I poke the (non-touch screen) screen. No detach. Can't go beyond about 120 degrees of tilt (can't even go flat). If you google search "foldable kickstand for laptop", you will see that MacBooks are well featured there. Many other laptops are, too. Arrests the wobble, and extends the tilt angle.
In general, the laptop hinge seems to be the mechanical weak point of the device. Some other laptops add a swivel to turn the screen backwards, then allow tilt, but no detach.
My Surface Pro has a kickstand, of course, which also cannot go beyond about 150 degrees, but does provide for the maintaining of tilt angle. But there is no way to use it like a laptop unless the kickstand also has room to rest on the lap or the desk top.
The not not closing completely over the keyboard might not be such a problem. Probably feels more like a "book". Might keep the keyboard half from breaking the screen, another common laptop malady.
I think Microsoft has made a bold new design which will be parroted or pirated by many others.