Wikipedia is extremely biased and has a lot of deliberate misinformation, so I wouldn't trust it for anything except as a basic starting point for information gathering alongside a web search. Wikipedia's founder itself has denounced it for its bias.
There are so many issues with Wikipedia which most people do not discuss here. I have witnessed dozens of articles deleted by people who had no understanding of the subject in question. In one case, someone went around deleting articles on rugby union, because the teams were not professional (most of them aren't to this day and weren't officially into the 1990s.)
