... secure boot?
I don't understand "just load GrapheneOS" sentiments. It only runs on extremely specific flagship devices with explicit features that allow it that are out of financial and technical reach for >99.9% of population of Earth and it still fully relies on AOSP. It's an escape hatch for mice. Or is it really not that way?
It is a dodgy Android distro for several reasons.
LineageOS has no such shenanigans nor has a pattern of suspicious funding.