Well i don't have a facebook account anyway, no phone, no social media beyond posting tech related opinion on VR/games over forums. Outlier perhaps, and i don't think in over 23 years of the internet i've ever clicked on a single referral as amazing as that sounds.
The little bit more might be nothing for a lot of people, but when you purposely avoid the whole system, you can see why people will actively avoid the facebook VR platform, if only for that reason.
I'm happy that it exists because it's a great entry in to VR for a lot of people (i bought one for my nephew) Aside from seeing as technically inferior device to what i currently own anyway, and something that would be non sensical given my VR usage, i spose the primary reason would be tying on in to my life story were i forced to have an account
Enjoying VR the way i do, it's become a obsession with craving the best available, thankfully the quest isn't that in it's current form.