There's no meaningful benefit of this over a password and 2FA authentication for users who are already proactive about security. I also doubt that passkeys will be protected by the fifth amendment the way passwords are, based on the "key vs combination" argument. While I trust Google password manager to help me remember passwords, I don't trust Google or any company to manage them for me.
At their core, passkeys are a easy and nice way to move from passwords to public private key cryptography. And hardware based authentication does allow more security. And by leveraging the hardware-backed keystore and security enclave, you can use your phone the way FIDO keys are already used. But there aren't clear benefits over 2FA and a password.
There are many reasons why I will wait as long as possible, maybe indefinitely before I start using passkeys. The idea of this being tied to Google or any other major company for my logins is not okay. There are many cases of people being locked out of Google accounts without the ability to appeal. With current 2factor, you can control the secrets yourself if you choose to. While it's true that you can't be phished into sharing your passkey as easily, you also lose a lot of convience and flexibility in login management. And it makes login sharing or multi-account management very inconvenient and difficult.
I was hopeful with 2FA rolled out that my accounts would be more secure, but most companies give you very little over which methods of 2FA are allowed or enabled. I don't want to be forced to enroll a phone number just to enable TOTP 2FA. I want to be able to choose between TOTP or HOTP for my accounts. I don't want to be forced to use a 2FA app that doesn't allow me to export and manage the secrets myself. In some ways FIDO keys solve some of those issues, but the hardware security aspect of it contradicts giving the end user the choice to self manage.
https://www.concordlawschool.edu/blog/constitutional-law/fif...