Who is saying this is proof that it wasn't NKorea? Straw man. People on HN are just more likely to believe Schneier or other respectable security people, and not government agencies who by their very nature are going to have their own agenda and not be 100% honest.

As far as consequences that actually happened -- Do you mean to say that theaters that showed the film were bombed? Or are you referring to embarassing email leaks which would have no doubt been released anyway?