[BestGuess]

> They're really not supposed to be litigators of "what actually happened," which may not be knowable

seems like best thing would be to be able to say "this is not verifiable" or similar. seems to me these issues people have could be solved or improved a lot by having more and more nuanced info not less. Like if people are just so damn insistent the myth stay up there it should also be fine to point out "though there seems to be no evidence supporting this claim or claimed notion" when the books or stuff cited have nothing but more claims. More info, more context, not less