Question

2. Why is historical accuracy a concern of directors who create historical films?

Answer 1

They don't want to making films that are false or give people false beliefs. This could starts fights or even rebellions.

Abstract (or TL;DR): An academic with living history experience muses on ideas of “historical accuracy”. True historical accuracy is impossible to achieve, but is an ideal to which one should aspire in living history museums, historical re-enactments, and historical dramas.