Then why do they sue Apple for passwords if they can crack any device? They use other people's software is all that it is, like any of us can do by downloading modules. Security is not one thing but many many layers acting as an orchestrated whole.
Security is hard, just as hard as it is to defend your car or house from all the bad things that can easily destroy them as opposed the time and understanding it takes to create them.
Destruction is simple, creation is hard, and creation from all types of sabotages is np complete.