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.
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