I'm also interested to learn more. Quick search yielded nothing, so I dunno what they're referencing.
...Signal's never had federation, though. That's been one of the biggest sources of criticism toward Moxie's design decisions for the platform.
I wouldn't rely on the size of the address space to provide security. It's possible to find hosts through methods other than brute force scanning. I remember seeing a talk from a conference (CCC? DEF CON? I can't remember) where they were able to find hosts in government IPv6 address space (might have been DOD?) through stuff like certificate transparency logs and other DNS side channels.
Man, I need to go find that talk now....
Edit: I don't think this is the one I saw previously but is in a similar vein: https://www.youtube.com/watch?v=AayifEqLbhI
Scenario time: A loved one has recently passed away, and I want to find all the photos I have of them. I would love to be able to have a local AI perform facial recognition to help me find these photos. The classification and tagging info doesn't get fed into surveillance capitalist garbage, and I'm still able to benefit.
GrapheneOS has defined a set of security standards for their operating system which have hardware requirements. These standards have been published and there have been efforts to engage with hardware manufacturers to adopt the required hardware. Blame the manufacturers for skimping on security, rather than Graphene being unwilling to compromising their values.
I wouldn't because I am not a dev. I stay in my wheelhouse and don't try to pitch features as something they aren't.
@Forbo
@lemmy.ml