Re: Simple explanation
He's right. You want to learn IPv6, you take one look at those address representations and a set of crazy rules about address shortening and abandon it.
Those who plough on and get stuck in a wall of rubbish about auto assignment of addresses, translation services, IPsec, privacy concerns, something about your MAC address being your IP address and give up too.
These are real concerns, and most/all IPv6 proponents just dismiss them, as the second AC did, rather than address them.