I followed this case closely when it was going on. The accusations of that guy were completely overblown. He did not seem to be on any kind of campaign or operating as part of any organization. He was a guy with some opinions and with a lot of time on his hands, who edited a lot in many different subject areas. His editing in most areas was in fact quite good, but in the area of UK politics he had a Tory bias that got out of hand some of the time. That type of thing is very routine, whether it's about politics, computer languages, or anything else.

Wikipedia's dispute resolution system handled it ok, I think. After a lot of examination of what had been going on, he was prohibited (at least at the time, those prohibitions can usually be lifted after a while) from further editing about UK politics, but he stayed active in the other areas where he was perfectly ok. There was an occasion or two where he brushed up against his prohibition and caused some temporary localized drama, but that also happens all the time and is no big deal. The pages taking him to task made him sound like an agent of the Illuminati which was ridiculous.