Even if you have nothing to hide, consider what it means for your rights.
Discussion
Yes. Security considerations should always begin with the question, “secure from whom.”
Passkeys are great for businesses to stop phishing and dumb employees. A journalist in a hostile nation would be an idiot to use it.
Graphene OS is a couple button presses away from "lockdown," it will require a code to get back in. There is also a setting that you can use that will put it into lockdown mode after sitting idle for too long. So Grapheme OS does offer some mitigations for biometric vulnerability.