Here are some of Meta's ask according to Apple...
https://developer.apple.com/support/downloads/DMA-Interopera...
AirPlay Continuity Camera
App Intents
Devices connected with Bluetooth
Apple Notification Center Service
iPhone Mirroring
CarPlay
Connectivity to all of a user’s Apple devices
Messaging
Wi-Fi networks and properties
So basically the permissions you need to make competent wearable AR glasses interop with your smartphone.
Yes and these are not new problems. I encountered showstopper limitations backgrounding processes that make use of iBeacons, back in iOS 7.
The potential for data collection is massive.
I was tinkering with a firechat inspired mesh messaging concept as an indie iOS dev. I could not dismiss arguments about potential privacy concerns w/ persistent background apps advertising and scanning - but the lack thereof certainly dampens innovators too.
Thanks for that link! dang (if you can hear me), I think the link should be updated to this one as it has more details.