I just don't get why we need to argue about something — the right to general purpose computing — which has been answered decades ago?
The user must be the administrator of their own device. Whether that's a laptop, desktop, PDA, mp3-player, smartphone, tablet, cyberdeck, netbook, or any other kind of computing device.
The user must be able to overrule any and all decisions. That's the definition of ownership.
Like, this was the reason why GNU was founded, and before that was the plot of the movie TRON.
We're still arguing for several reasons, one of them is that people still confuse the user with the owner, as you do. "The user must be able to override" is implies that if you have physical access to someone's phone, you can install a keylogger before handing the phone back its owner. Nice for you but I imagine the owner might still quibble, even if you quote TRON.
Being the administrator and being able to sidestep OS protections are not the same thing. Without root, the user is in control of what application does what and how. With root, the user is not. Root is not freedom or ownership, like many try to claim. Root is a hacky shortcut to proper functionality. You can build and sign the OS with your own keys, without undermining the security of your device, and adding whatever functionality you want with the principle of least privilege.
Its really funny because Tron, or at least Tron Legacy, is a great example of why godhood is dangerous and why a user and a program having root access is catastrophic.