I have no problem with the police hacking into devices. They have the right to use bugs and find exploits just like they have the right to pick a safe of force a door. But backdoors and unacceptable, that's like mandating that every house have microphones in every room connected to the police center
Digital rights, digital ownership, digital business models, privacy, security, speech, digital policing... they're all very different from their analog analogs.
The differences between A & B are less pronounced in the digital realm.
Police hacking into devices has more in common, practically and culturally, with signals intelligence than it does with ordinary policing.
I don't disagree with you. I just don't agree that "it's very simple." We need to invent or adopt novel concepts, not insist that nothing has changed.