Earlier quoted context omitted.
Consider this (by Graphene OS): https://discuss.grapheneos.org/d/24134-devices-lacking-stand... /e/OS community talking about it: https://community.e.foundation/t/article-from-grapheneos-abo... And then maybe this: https://eylenburg.github.io/android_comparison.htm Hope that helps.
I like GrapheneOS but they fail to understand in this post that the #1 security concern an android user face is the lack of privacy. Sure they have hardened everything but realistically, that's not the main threat for your average user. Their top contribution to android is the sandboxed Google Play, by far.
It's a misconception that GrapheneOS is focused on security over privacy. It heavily works on privacy features and the work on security features is entirely to protect privacy. There's widespread use of commercial exploit tools and GrapheneOS is proven to provide far better real world protection against those. Most alternate operating systems reduce privacy from AOSP and massively reduce security while GrapheneOS is preserving the baseline and heavily improving both side by side.
GrapheneOS is also very focused on usability and app compatibility, making sure to preserve those with the major privacy and security enhancements.