As we've seen before, Wikipedia is often unreliable. For a more recent example, see this ongoing thread about whether the Biblical canons of the councils of Carthage and Trent are the same. Not only is the Wikipedia article Orthodox cites wrong, but it also seems likely that Orthodox edited the article. Keep that in mind the next time you think of using Wikipedia. The article you're using might have been edited by somebody like Orthodox.
I can understand the use of Wikipedia in some contexts, such as to get basic information on a relatively non-controversial subject. But it's often unreliable. It should be used with discernment. And as the thread linked above demonstrates, people like Orthodox don't exercise much discernment when using Wikipedia or when editing it.