This is what I'm getting at: I tried to present some criticism of Wikipedia in this discussion. However, a lot of my comments are kind of vague because I failed to give specific examples. Consider why this is so:
Discussing a specific example would require both some (sometimes rare) knowledge of the subject at hand and knowledge of the arcane processes through which a Wikipedia is governed and through which the disputes are resolved.
This means that I would need to invest a lot of time explaining everything for someone to be able to understand the example, but, on the other hand, almost nobody (if not perhaps already a Wikipedian and familiar with the subject matter) would be willing to invest enough time to really understand the example and all the connected issues anyway.
Thus substantial criticism of Wikipedia and its processes never gets to the public at large. I think that even most of Wikipedia's contributors hold little understanding of how Wikipedia actually works (socially) because the majority are very casual. And don't get me started on the incompetent contributors who meddle with articles and topics that they don't know enough about.
Another issue is that Wikipedians probably won't want to associate their Wikipedia identity with their HN identity (and similar).