Follow the thread back to HBI's first post. ("Idiots") He's the one who brought up the hosts file. I've just been trying to explain the real world consequences of doing that, in order to puncture the idea.
His other vague notion ("shadow DNS") explains nothing. Who would administer it? What protocol would it use, and how does that solve anything.
All we've got here are handwavings on par with third rate 1980s cyberpunk novels.