TFA is authored by the developers of an alternative operating system that can be freely installed on every Google phone since Pixel 6.

....and this is only Google phones solely because NONE of the alternatives meet the team's stringent security requirements.

	▲	kajman 8 hours ago \| parent [-]
		The graphene project seems to choose security over freedom in a few cases. They also recommend using the Google Play store over F-droid IIRC. Not my preference, but they seem so far ahead of other ROMs right now that I use it still. I do believe people have built and installed it on other devices without too much trouble, but I don't think that'll ever be supported.