Because we only have a single perspective on what actually happened in this instance. That perspective is selective and is motivated to tell the story a particular way. It might be right, but we do not have enough facts to know. So it's hard to know what the facts we can actually draw conclusions from. This makes a discussion of issues difficult because more time is spent on the identities of the participants rather than the actual underlying issues. It descends into being merely about GitHub vs. Coraline.