LineageOS was not fully degoogled before GrapheneOS devs came and did that. I think now LineageOS also has these patches.
They also dont apply hardening, also not for privacy. The webview for example is just Chromium.
There are a ton of features, all listed on grapheneos.org
Many are pretty technical, a lot of them are for very high threat models. I mean, we still all manage to kinda not get hacked. But that may be because we live under governments that are not full dystopia, yet. Or because we are just boring.
GrapheneOS is likely overkill, but I like to have the most security I can get. These guys are doing amazing work, hacking Android at very low levels. For example they found a way to completely disable the USB port, I think using the same mechanism as the "water detection" would use to shut it off.
Or storage and contact scopes, or the hardening everywhere. Pin scrambling.
A lot could be improved, LineageOS has way better AOSP apps for example. These should land in GrapheneOS.
I'll just keep using Lineage OS as that's what works best for me. You can use what you want but my experience is that the Graphene community is toxic and arrogant. I don't want to be a part of that community. If anything I would use Calyx OS
It is true that there is toxicity and arrogance among these people. I can forgive them because
They are right (and even if I think they are not, they know more about it so I couldnt out-argument them)
They work on a FOSS OS that is extremely secure and private. Literally doing the most important work, protecting vulnerable people etc.
They need to fight against misinformation every day. The amount of noobs on their forum is pretty insane, and a lot of companies and other projects spread misinformation, sell near-EOL or already EOL devices etc.
CalyxOS is way less secure, in a lot of parts. It is mainly just LineageOS.
It really isn't. F-droid is built for currently supported versions of Android. F-droid basic is just what it sounds like. It is basic and not really usable for me as the layout is goofy.