Android Central: Fairphone (Gen. 6+) with /e/OS

ELI5: Why use /e/OS over Graphene? This isn’t a rhetorical rant; I’m genuinely curious.

Edit: See below. I misphrased this question.

You don’t own a pixel?

Sorry, I realize that question could be interpreted in two ways: I meant for Fairphone not to try to get Graphene working on their phone. I know Motorola is trying to do that right now, for example.