Most academic historians accept that historians' own circumstances demand that they tell the story in a particular way, of course. While people wring their hands about 'revisionist' historians; on some level, the correction and amplification of various parts of the past is not 'revisionism' as it is simply the process of any historical writing.
Since the era of 'Sherlock Holmes,' private detectives had long been able to influence cases on their own. But the online detective, who had no sort of professional training or even long practice, is a purely modern phenomenon. The Internet changed everything by letting anyone become a self-appointed 'expert' on a case.