GrapheneOS is an open source project and that means people can make forks of it. There aren't any ports of GrapheneOS to other devices providing the same set of privacy and security features it provides. There are only highly incomplete ports losing many of the core features.

Many accounts across platforms have recently started falsely claiming there's a port of GrapheneOS to other devices and that it somehow disproves that it depends on hardware-based security features unavailable elsewhere. The person who made it says that isn't what they did.

It omits large portions of the GrapheneOS changes including not having any of the kernel changes. Many parts don't work.

Since they don't have our kernel changes and haven't done the substantial work needed to port GrapheneOS to a specific devices, many core features including hardened_malloc, hardware memory tagging, USB protection, dynamic code loading restrictions and much more are missing.

It's missing many core GrapheneOS security features and also privacy features. It doesn't provide updates to the kernel, firmware, drivers and HALs. It's missing standard Android protections including but not limited to verified boot. They haven't ported GrapheneOS elsewhere.

It's missing a lot more than what they list as not being included and that's likely partly because they don't realize how much isn't working. It's only one part of an OS and is using the stock OS kernel, drivers and HALs. It also doesn't provide updates for those or the firmware.

The author of this project is likely more than willing to list many additional features which are missing are not functional. They're also likely willing to make it clear it can't provide people with proper updates. They don't want people to be misled or to attack GrapheneOS