Someone who's been banned from the site is submitting the videos is my guess, seeing as how a whole bunch of them popped up after the bannings of some people. I can only assume the submitting system still works for banned users, even if they're anonymous? It just auto-tags the video as "banned" presumably so it can be spotted going by their IP maybe?
Because it didn't have 80 million pop culture references? Because the characters weren't good slash material? I have no idea.
The problem might be that is it was a show for adults, but had to be marketed and sold to kids, so Cartoon Network never really found an audience for it.
Also, it never had an ending. Fortunately, the movie is one of the first projects from Frederator Studios' feature animation division, and I remember Gennedy mentioning somewhere that he was saving the conclusion for the movie.