Calmness, dude. OF COURSE your subscribers are quasi-human nazi scum who don't understand anything, ruin everything you enjoy and generally make you want to commit genocide. They're YOUTUBE COMMENTATORS.
He's not leaving guys (if that is indeed what I have picked up from your comments and the description correctly to be implying), this is simply his last word on the false DMCA matter. He's been making too many videos based around drama and wants to get back to debunking junk. He repeats many times that most people have been civil, but some things just had to be cleared up.
I'm not entirely sure he's really hanging up the Crocoduck stuff though. Sounded to me like he was just taking a break from it all, and letting the drama die down.