I'm sure the enthusiasm is appreciated but Graphene is very different even from stock Android. It's not simple enough for mainstream, and UI is odd.

I'm typing this on an iPhone and my pixel 10 graphene is just to my left. It's my favorite Android distro but I wouldn't daily it.

I love how boring and quiet the OS is though. It doesn't try for engagement. Battery life remains very good. The distro is close to being what the Microsoft phone wanted to be.

GrapheneOS is already existing and pretty usable!

Librem 5 runs an FSF-endorsed operating system, PureOS.