You probably should start using DOS then.
The Iphone 5s and above allow you to create multiple finger print entries and when you create the first entry, you have to create a passcode, and the phone tells you then and there when you need to use the passcode. Reboots, not used for a certain amount of time. It is spelled out for you.
The parents of a 13 year old should set restrictions on the phone where they know the passcode, and that the kid cant change it. And those parental restrictions are built into the phone, and fairly easy to implement.
Apple nor Google, is responsible for your data or passwords. It is your responsibility. You do not call Maytag and say "hey i put bleach in the dryer, now its ruined, come fix it for free.
Apple tightened security because of all the users who lost their phones without passcodes who never set up find my iphone to remote wipe or erase, were bent out of shape when the lost their devices and all their info was wife open.
The security features are there for a reason and you choose how you use them.