Being against hierarchy doesn't mean that just anyone can do anything they please in a space maintained by specific individuals without consequences. Sure this is a virtual space, but, as an extreme example, if a nazi walked in to the local infoshop (this sounds like the beginning of a bad joke...) and spouting off, I would hope that the folks from the infoshop would remove said individual from their space. Granted, in that extreme a case, probably everyone in the space would give a hand (or a boot).
The point is that opposition to hierarchy doesn't mean that if I have an anarchist publishing and distribution project, or whatever sort of project, that you can come along and tell me what I should not be publishing, distributing, or whatever. The same holds true for this project, to my mind. If you want unmoderated, or universally-moderated, start your own site that does so.