That's a huge downgrade for privacy, security, usability, battery life and compatibility with apps. GrapheneOS is Linux too. Linux doesn't mean glibc and systemd. Linux is unfortunately not a great base for an OS focused on privacy and security but it's the only practical choice at this time. In the long term, it needs to be replaced as the bare metal kernel.

I have it. It's far too slow to be useful, and it's not the hardware's fault. GTK and Libhybris are bad separately and hot garbage together. This problem won't be going away while the hardware is relevant.