Fairphone 6 does not fulfill the hardware requirements (secure enclave, MTE, etc.), nor software requirements (monthly firmware updates, etc.). So there is nothing that GrapheneOS can do at this point. The ball is in Fairphone's court if they want this, but Fairphone seems more interested to cooperate with /e/OS, whose CEO proclaims security hardening is for pedophiles and spies (thereby fueling the narratives that support chat control and such nonsense).

One of the underlying reasons is probably that the Fairphone hardware and software is developed/maintained by a Chinese ODM (T2Mobile), so the question is if Fairphone even has the know-how to make such a phone. Heck, they have failed to fix bugs that have been plaguing people for months (e.g. regular dropping of all connections when using IPv6 on certain routers).

Motorola is going to make devices that fulfill the requirements and GrapheneOS is cooperating with them.

>GrapheneOS smearing Fairphone as not secure in 3..2..1..

GrapheneOS would love to support more devices, that "smearing" is explaining that a company doesn't make secure devices, which is completely correct criticism.

Fairphone for various reasons is not able to or willing to achieve the hardware requirements. It's not easy to create some of the worlds most secure devices.

They've given concrete reasons to not work with them. If Fairphone made devices that fulfilled the requirements, then there wouldn't be any issue.