Discussion of what?

What is there to discuss? It's already been done to death. Maybe North Korea did it, maybe they didn't. Maybe it was really a false flag operation by the US government to discredit North Korea and create an atmosphere of fear which would allow tougher 'anti-hacking' legislation. Maybe Sony had itself hacked as part of a viral marketing campaign which went horribly wrong (or horribly right.) Maybe it was a false flag operation by China. Maybe it was South Korean activists. Maybe some anons did it for the lulz.

John McAfee says it was a group of hackers he refuses to name, who are "civil libertarians" and who have issues with DRM and copyright law. It's just another theory to knock around. Maybe it was Dread Pirate Roberts. Who knows?