The North Koreans aren't a bunch of anonymous internet commenters making death threats. They have mounted hundreds of one-way missions against South Koreans, capped by this spectacular attack. Their operatives are skilled and determined stone killers. Showbiz people can't be hermits. If Kim orders the assassination of specific people involved in Hollywood productions, there is nothing that that can prevent them from being planted.
I’m not dismissing the Norks as incompetents. But I also don’t give a damn about any attacks they target at Hollywood or the stoner idiots that are involved in this film. The Hollywood libs have been spitting in my face for years, trashing every single thing I value and cherish. I wouldn’t lift a finger to help those bastards. If Kim sent out assassination squads to off every one of those degenerate Hollywood bigwigs, I wouldn’t shed a tear.