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I don't see what OpenBSD has to do with it. Is this like liking reliability in a car meaning you are a Toyota fan? I've had no trouble with banks, brokers or payment networks on GrapheneOS but I don't use crap like company-X pay wallets..
GrapheneOS is not just AOSP rebuild. They do an astonishing amount of work to harden Android. They have a lot of security and privacy-related features. They built a custom layer over Google Services to contain them. I admire this effort. However I don't care that much about my privacy and I don't care about extended security. All I want is a basic Android system without any of added apps, without any AI. I want the m…
Its similar to what the Linux distributions that try to turn on a SeLinux like profile by default would feel like if they really put in the work. That's nothing like switching (from a Linux) to a BSD.
(I would love to just run my desktop Linux with a half baked touch UI and rely on browser versions of almost everything, but that would feel like a real switch between OSes instead of just seeing the same OS with a corrected security profile as the user. I also don't see why you compare it to an Abrams, I doubt an Abrams has a security model intentionally compromised by an ad company, GrapheneOS just makes it possible to catch the dumbest or laziest attacks on a system no one should run ever.)