First of all to use security keys you have to install Google Play Services WHICH I ABSOLUTELY HATE. Second of all it is very buggy to use them and it doesn't turn on NFC automatically so you need to do it from settings (this one is probably because Play Services aren't privelleged so they can't enable NFC on GrapheneOS.) Even after I managed to enable NFC and go through weird behavior and bugs it gets stuck when my security key gets confirmed. It just says "you can remove your key now" and thats it.
GrapheneOS if security focused OS, but I need to install privacy invading apps to use my Security Keys which are superior to TOTP bs and even with that installed it behaves weirdly.
I'm not hating and I absolutely love the project and community. But some things just pisses me off.