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.
Making it a taboo for a furry to date a non-furry is silly, and thankfully that hasn't been my experience, and I'm sorry if you've experienced that.
As for the reason why it's common to find dates within the fandom? We have a culture that's very open, often intimate, and extremely weird to many outsiders. Also Tinder fucking sucks and Grindr isn't much better, the fandom is a better way to meet people than those apps.