Not that I disagree with what you've outlined, but to play devil's advocate: Some security settings that pertain particularly to Android devices only (such as

Not that I disagree with what you've outlined, but to play devil's advocate: Some security settings that pertain particularly to Android devices only (such as ADB, internal SSH server) can only be disabled if you use apps that require root [0]. Maybe if you assume you have a targeted attacker, and they have physical access, root seems like a very bad target. If you install malware that gains root access, doubly so. But if the user is intelligent enough to not install random, non-vetted apps, and to turn auto-updates off, then rooting may actually provide a security benefit here, because you can at least avoid blind network attacks. I'll also say that if you choose to unroot after using SecDroid [0], then you may find it difficult if not impossible to root the phone again, as you won't be able to use ADB anymore. In any case, there's a lot of vulnerabilities in mobile phones, and you really have to pick and choose to see which ones you think will most likely affect you. [0] https://github.com/x942/secdroid https://github.com/x942/secdroid