Typically, no. You're thinking of TOTP/Authenticator based 2FA. Those still come with backup codes in case you break the phone that has the TOTP codes warehoused. I always recommend keeping those backup codes saved in the notes of whatever password manager you're hopefully using. Passkeys are essentially just one half of a cryptographic key pair (like what you'd use for authenticating SSH without passwords). These allow you to authenticate once using password + 2FA, then use the generated passkey for future sessions. Since these are much more complex than passwords and remove the need to actually remember anything, they are significantly more secure. There are also some other features that I'm forgetting, and that may not be a perfectly accurate description, but I think you can get the gist.