One could argue that authenticating via 1Password is already multi factor in itself e.g. Master Password is Something You Know as the first factor and access to

One could argue that authenticating via 1Password is already multi factor in itself e.g. Master Password is Something You Know as the first factor and access to a 1Password Vault is Something You Have as a second factor (since you cannot login to 1Password with just username and password, but also requires a Secret Key that can only be acquired from a device that already logged in). In this case TOTP acts more like an insecure one-time session key.