Yeah and security models are fine. Having root on my device isn't the same as running everything as root. e.x. I want to access my files on my device over SSH so i don't have to keep plugging my phone in, sadly turing completeness doesn't get me there when I can't give my SSH daemon access to the filesystem. These are all solved problems, we're just CHOOSING not to expose the solutions to the end user under the guise of security in order to retain control.