GrapheneOSGrapheneOS and /e/OS are very different. GrapheneOS is a hardened OS with substantial privacy/security improvements:
https://grapheneos.org/features
/e/OS is not a hardened OS.
They're always on a very old release with partial support. Android 15 QPR1 is needed for full privacy/security patches. Only patches for issues deemed High/Critical priority are backported to older Android releases, and most privacy patches are not backported.
They also lose a bunch of security features.
All GNU social JP content and data are available under the