I havent done a ton of research, but my general feeling is that the whole thing is bunk.
However, what you propose is a very very very slippery slope. There are a lot of major news events (watergate, monica lewinski, iran contra) that were completely unsubstantiated, right up until the point that they weren't.
Killing off an entire topic just because one whale doesn't think there's anything behind it sets a bad precedent.