Everyone I know who has tried to contribute to Wikipedia would concur with your comments here. I myself dipped my little toe tentatively into the Wikipedia swamp a couple of times, and can confirm everything you say. It’s a toxic presence on the web, a cesspool of plagiarism and insular politics masquerading as political neutrality. It sucks the energy out of the web of creative, individual voices that should be the ideal, and substitutes crowdsourced mush that reads as exactly what it is: something written by a committee.