Down to Earth, but still telling everybody to use Signal?
Discussion
Must be the ones focused just on attaining certs
Some people aren't using Signal because of the metadata but if you're a targeted individual, you shouldn't use a phone for anything very sensitive anyway (you could have been pegasus'ed without ever knowing it).
Is there a page that documents what metadata is made available? From my understanding, it is very little, and designed with the intention that the servers could become decentralized. I doubt their company would make that move anytime soon, however.
you can check the court orders that signal publishes.
iirc: timestamps, ip addresses, destination user phone number (not from sender afaik, that's encrypted)
So presumably with a unique IP, it would be possible to determine sender and receiver (however not likely in mass). If used with a VPN or Tor, it's much more difficult.