

I have a general dislike of Facebook which has kept me away from their headsets, however this actually seems like a great idea.
Wearing a computer on your face instead of on your back has been one of the most asinine design choices of standalone vr. Comfort issues from putting weight on your neck while you’re expected to look around, the headset jostling around because of the momentum of the weight, the heat buildup from having both the screen and the computation on your face. Trying to solve these hurdles by making the computer itself more lightweight and cool has probably had other tradeoffs, likely regarding performance.
Security through obscurity is generally considered terrible practice in the cybersec community. It’s much better to actually find and fix the flaws than just put your head in the sand and hope no one notices the issues.
Exploits in games and the exploits used by hackers for various other purposes are very similar in nature if less often in effect.