Sorry; not getting into flame wars about the unknowable details of an unrelated topic. It’s an epistemological black hole. But you can find plenty of examples from your favorite brand of fringe on a book site that truly doesn’t censor, such as z-lib. And by the way, “factual and well-researched” doesn’t imply complete truth, but probably some form of legitimate interest. For instance, there have been many books written from collected personal testimony of alien abduction, perfectly factual and well-researched from the second-person perspective, but probably not the only sources one should consult in the study of exoplanetary astronomy. There is a wide range of topics where it is the other way around too, where folklore is celebrated, and candid observation is suppressed. In fact, it seems that human nature prefers this naturally, and even scientists can only maintain objectivity within a very narrow range.