Graphene is totally open source, nothing is stopping fairphone from maintaining a port for their phones

GOS did reach out to them in the past, but they couldn’t reach a mutual understanding for support regarding hardware level patches for the fairphone 3 I believe. There’s a git issue about it

I see no reason the fairphone 5 couldn’t have GOS support, sure it’s missing some of the security requirements, but fair phone could build the branch and make it public