graphene is ONLY for select Google pixel phones though. I wish this was made much clearer by the team and advocates.
its a real shame because pixels, although big in the USA are typically a minority of most android ecosystems elsewhere, and bootloader hijinks keep some perfectly capable phones from being easy to switch over to, even if they were supported.
Even on samsungs, which are much better for flashing than they used to be - my options on a year old flagship for a decent ROM are pathetic compared to the old days.
so I would really love to use graphene, and go back to an open source ROM without crap on it, but pixels are such a bottom tier phone for their price in a lot of places, as much as I really really want the project go gain traction for their transparency and objectives.
I'd argue however that there's much more to android than either Pixels OR chinese spyware crap - Samsung, Sony, and LG aren't always perfect, but often make very good products that if running a custom ROM, are every bit as secure as any pixel, while the hardware of pixels is generally a bit worse, but compensated for with better software optimisation. Buying into a false dichotomy that there is only one good android manufacturer puts us no further ahead than apple fanboys beholden to a largely good, but sometimes flawed ecosystem.
My ideal is that development can expand to other mainstream brands and OEMs, and that the interest in the graphene/ROM community picks up steam more broadly, rather than being siloed into pixels alone, and bound to the fate of google-specific hardware going forward.