Not necessarily. There could be value in debating these things, or if not that then at least value in having the freedom to speak openly about one's political opinions. But if a site's creators do strive for neutrality I think that's fine. There's enough forums out there that one specializing in being politically neutral wouldn't hurt--some people would probably like it, and those that wouldn't don't have to participate. (Though I would be angered if retrospring itself started enforcing neutrality by banning people..)