Sadly, the campaign is working. In a time where we are as interconnected as we are, a political film with tens of thousands of fake reviews should send out a huge red flag: someone doesn't want this movie to be seen. However the reality is that not many people are even aware there are so many fake reviews. The mainstream media is not covering this issue. IMDB has not responded. I'm not sure why this is, but can guess that it's related to the subject not being newsworthy & risk of harm with Turkish relations (i.e. why the U.S. refuses to officially acknowledge the genocide).
Many people are going to visit the ratings page before deciding to watch the film, and of those some will decide it's not worth their time because of the overwhelmingly negative score.