Earlier quoted context omitted.
What part of cheaper, better, and open source is shittier exactly?
Cheaper for sure, better maybe but open source certainly not, AOSP doesn't run on a single device on earth, not even the emulators.
https://grapheneos.org/features
>GrapheneOS is a private and secure mobile operating system with great functionality and usability. It starts from the strong baseline of the Android Open Source Project (AOSP) and takes great care to avoid increasing attack surface or hurting the strong security model.