Having watched the edit wars, editor sanctions, and all the rest over the last year on a variety of subjects. I can say that there are cliques of editors that have an agenda. They don't care about a NPOV, they want their POV. Even when ABCOM steps in and kicks them out, they'll come back either as someone else or a new account and continue to do what they were before.
You want a good example from the last year? Take a look at the gamergate article. Not only did ABCOM step in, it banned 5 editors, two of which were carrying a very specific agenda, one of whom came back under a new alias and ABCOM is now looking at revisiting it again because people can't be bothered to keep the article neutral.