How the fuck this headset weighs over 600 grams?

Because plastic isn't a premium material. Apple users expect fancy alloys with glass everywhere, Apple can't very well show up with a plastic headset and ask $3500 for it, they need all that extra weight to convince people that they're getting a premium VR AR SPACIAL COMPUTING device that is unlike anything ever done before. It's all part of the grift.

I'm a reformed VR enthusiast and I have got to say that it's all a hell of a gimmick, but it's just a really neat gimmick. Without any hard-light tech or something to make stuff that you can actually interact with it's all just Wii-mote waggle style nonsense that abstracts things that should be button presses into complex motions constrained by physical reality that our computers/keyboards/mice/controllers allow us to escape.