Reading other people's dropping off stories sounds similar to my own. I was a fan from around 2009-2012. Around that time I wasn't feeling the videos as much. The skits were becoming more prominent and weren't getting much better. Also realizing the damn reviews were about as long as the movies they were reviewing, mostly just clips of said movie. I thought Kickassia was pretty dumb but fun, I found Suburban Knights bloated and boring. I think I watched one episode of To Boldly Flee before completely dropping the site.
But what really killed it was the one two punch of the way too public Spoony drama followed by the retiring of the NC character. At the time, Spoony was one of the best reviewers on the site, so losing him was a big blow. That being said, he was way in the wrong for how he acted during all of that, from the time he made gross joke and refused to apologise to the point where was blocking fans who were just trying to help him.
Granted, Spoony's output had declined a lot since his other way too public break-up with his ex. Seeing all this way too public drama soured the experience watching their videos when you all this people seemed to hate each other. Another reason I didn't bother with To Boldly Flee.
Although that all went down shortly after they finished filming To Boldly Flee, and looking at the tweets in this thread, I wonder if nerves we're already pretty frazzled.
I did check the NC return, but like others have said, was really not feeling it. The skits were bad and way too prominent. In the time since, I learned about their game show debacle and, yeesh, glad I left.