That's totally fucked. I rarely use wikipedia unless it's looking up someones bio or searching for source references to research from. I had to edit a Wikipedia article that said Butch Cassidy (As in Butch Cassidy and the Sundance Kid) was the inspiration for Oliver Twist, since he was the pseudo nephew of Charles Dickens. Too bad Cassidy was born 20 years after the book was published. .... MOTHER FUCKER - someone changed it back. It's got to be government interference. Always rewriting history.
The last I knew, anybody could edit Wiki articles. I have done it although it's been a few years. -- HOWEVER -- The edit must pass the "discussion page" and whatever people or person wrote the original article. If they determine the edit is not accurate, they won't let it stand. About ten years ago when Wiki was getting popular (and everybody was laughing because "anyone can edit it") I read an article showing the results of random Wiki articles vs. articles in the old established encyclopedias. None were totally accurate on every point (which is impossible) and Wiki was as accurate, overall, as any of the others. Has this changed?