Computers don't have to follow the same design choices as were done 50 years ago.
It doesn't have to be named root, the point is that my device should act in my interest to the fullest extent permitted by the law.
But those running illegal monopolies no longer fear the user and blantantly ignore their choices (yes vs "remind me later" is a good example), if I can't enforce my choice, I don't own that.
What you also seem to be ignoring is that the fact that for example there's no simple runtime internet permission toggle is NOT an accident, this functionality is deliberately not directly exposed despite creating no "security risks" and you know it very well.
Even if a toaster doesn't have such a setting or an easy way to add, you still own it. When products are designed they have a specific design that they implement.
However, it's pointless to focus on what's not available but could - it's the WHY that matters. A toaster without fancy functionality might be mine, but a toaster that only cooks a specific brand of bread, or that displays ads doesn't feel like mine. This is not just a lack of a feature - it's deliberately not there to prioritize the manufacturer over my experience..