So absolutely true. These people are insufferable. Any time I've made a non-trivial edit to Wikipedia I usually end up clashing with these people. It really sucks because a lot of the time, they don't argue in good faith, and throw every rule in the book at you to get their way, while hiding behind a facade of impartial rule-abiding.
So frustrating, and has drastically lowered my confidence in Wikipedia.
Also, it's fun to note the "lords" of various general topics. Find an article about a person in the right-wing political sphere and you're very likely to find the same small set of "Wikipedian" toadies ruling over it with an iron fist. I'm sure the same goes for many other topics that aren't about politics.