People understand that movies are politicized by the people who make them for meeting political agendas. That is why they have no real effect in the political arena. They are movies and their main objective is to make a profit for the producers and investors.
The answer to the controversy of whether the film motivated the terrorist may be answered when the ringleader who was captured by Special Op's and is in a US prison awaiting trial comes to trial. He is alleged to have told his debriefers that the film was used to motivate the attackers. The Benghazi conspiracy theorist simply refuse to acknowledge this factor, seemingly with the hopes that a delay, timing, legal decision, plea or refusal to testify will prevent his testimony that acknowledges he made that statement and in fact, used the film to motivate the terrorist the way it is alleged.