A police state is when you can get pulled off the street for not wearing the correct clothing or a woman is not escorted by a male
No, that's a theocracy.
or not speaking of your country's leader without the correct titles and not showing reverence.
No, that's a dictatorship (or authoritarian monarchy).
Obviously, you didn't RTFA, but that's the norm these days. The traffic doesn't go through the supernodes, all call traffic is p2p. The supernodes are directory servers so that clients can locate other clients.
And this is exactly why it's a bad idea to break the end-to-end principle.
You don't need thousands of distributed servers to run a simple directory / presence service. The primary purpose of these 'supernodes' is to set up a call between clients when both are behind NAT. The 'supernode' (just a fancy word for a non NATted server) asks each client to make an outgoing connection to the destination. It is this action which creates the permission entry in the NAT table, allowing incoming connections and thereby peer-to-peer communication.
With IPv6 this (admittedly cleverly-designed) kludge would not be necessary. Instead the endpoints can communicate directly.
Genius is ten percent inspiration and fifty percent capital gains.