The term "conspiracy theory" is used to dismiss and ridicule those who don't buy the official version of certain events, to shut them up and shut down any chance of a dialogue. It is important to have a forum where the raw facts and empirical data (not opinions, theories or interpretations) can be explored fully, from which as accurate a narrative as possible can be extracted. No topic should be banned, however controversial. When it comes to the truth, no event should be above reexamination if new information comes to light, even if it leads us to the very uncomfortable task of having to question and reassess the premises upon which we have constructed our reality.
Truth, facts and accurate information have nothing to do with who the person is or the context. Preselecting who is credible or not before they get to make their case is not good science. As to the context, it will privilege "facts" that justify the context.
In the spirit of free speech and true scientific inquiry, it is important to give a platform to all, not with the agenda of making them look like idiots but with a genuine curiosity that maybe, lust maybe, they might have something worthwhile to offer.