No, because a password manager still just stores passwords (one factor!); if someone got that password they can get in

The whole point of a passkey is that it’s something you have, not know:

- you can’t guess it because it’s a really long encryption key

- you can’t phish it because using a passkey does not give the passkey to the site, it just proves that you have the key (typical priv/pub key auth)

- you can’t steal it because passkeys are meant to never be moved from the device — it’s supposed to be impossible to extract them, as they’re supposed to live on a secure enclave type chip that is impossible to extract from

So, no, not like a password manager