e.g. if I think of the [[Agora]] / [[FedWiki]] and [[Wikipedia]] contrast, and the claim that [[Multiple voices are better than one]], then I think that multiple voices is more variety, and then more able to provide the variety needed to adequately navigate complex questions of coordination. And the flattening of voices in to one is an unhelpful reduction of variety.
On the flip side, too much variety leads to a [[cacophony of voices]].
I can not claim to know enough about either space to know if this is bollocks or not. Gut says worth exploring.