Watchtower "passkeys available" is wrong / not in all cases right

On these sites, you'll find that Security Key = Passkey, though they may only allow you to use it for 2FA, rather than an authenticator app, instead of completely handling login. However, some sites do indicate "Security Key" as though it's only a 2FA option, but you are then able to sign in with a passkey alone.

Not all sites have upgraded to allow Security Keys/Passkeys for complete 1 step login. However, even on those you can still create a security key, which 1Password will store as a Passkey, you can eliminate having to fill an auth key. Presumably, if they aren't knuckleheads about it, once a site enables 1 step passkey login, the passkey you setup via their security key option will 'just work' for complete login.