I was doing a story on FR. Re: Illinois, teachers, education-some NW suburb high school. Forget the details now. I used Wiki, "in and out" doing the story. I went back "in" to get a "line" and it had dissappeared!..The story was just growing legs. I figured out how to get into the cache and actually found "the line" that was pulled by some "anxious" & "interested" party.
So yes, Wike can be manipulated.
Don’t doubt it. Have seen it happen myself.
On scientific and factual material it is generally accurate. On issues where politics or culture becomes part of the picture much less so. Things related to global warming are notoriously slanted.
However, it isn’t reasonable to reject a wiki reference without posting one of your own, in essence saying a personal opinion should just be accepted by others as fact.