> Your 2fa codes are effectively always available on your computer this way. No, they're not. They're available on the hardware key, which is more secure than

> Your 2fa codes are effectively always available on your computer this way. No, they're not. They're available on the hardware key, which is more secure than software (malware, keylogger, etc), and requires a physical touch to be activated. If your computer is lost or stolen, you simply revoke your lost key and use your backup one. If your password is compromised (say, by a keylogger), they won't be able to do much without your hardware key. It's not perfect, but it's a good balance between security and convenience.