Whether it's the passionate religious fervor stoked by the Shroud of Turin or racist, anti-Native American revisionist history, these "controversies" will continue to exist and be maintained because they are a good business proposition.
Napoleon Bonaparte once famously observed "history is a set of lies agreed upon." For those who look for the truth, it is often far too easy to believe in fraudulent history and science when they tell us what we want to hear.
The occulture scene gets decidedly more unhealthy as money, greed, quest for notoriety and lack of scruples allow the sensationalist speculation and outright hoaxers to keep right on fooling everyone, time and time again. There's a sucker born every minute.