Okay, and how am I going to give the user the right to wipe all software from the device and use a completely custom software?

I mean, we all agree that such permissions are not required during everyday operations, but there should be a way for the consumer to have control over the software being used. And I mean all aspects of the software: firmware should be updatable, the OS should be replaceable, and the security concepts within the OS should be customizable by the user as well. I have no problem with hiding such functionality and requiring users to read the documentation to find out how it can be done, but it should still be possible.