The problem with getting "all sides of the issue" is that that process itself is highly susceptible to bias. If there was an article about vaccines, should the news organization solicit opinions from antivaxxers? These are mostly uneducated fools who reject scientific consensus because it makes them feel a modicum of control, not because their anti-vaccine stance has any medical or societal merit whatsoever. Where does the value in seeking "all sides of the issue" come from?