It’s Apple’s fault for lulling users into a false sense of security. They offer no-backdoor encryption but throw it all away by encouraging weak passwords protected by a promise they can’t keep because there is a backdoor to the system designed to protect the weak password. Touch Id is even worse because fingerprint laws can compel you to unlock the phone. You have given potentially disastrous advice. http://www.huffingtonpost.com/2014/10/31/apple-touch-id-ruling_n_6083920.html
Plus fingerprints have a huge problem as a password: you can’t change them.