However, take a World War II Hungarian Freedom Fighter who fled for his life to this country when the Soviets took over. He calls his mother weekly and gets a steady torrent of news about his families' repression because of him. He never married or even had time to date. Suddenly the cold war ends and freedom comes to his family so he can return to see them. Philosophers and politicians debate topics, but few people go to movies to see topics.
Movies are about people and the impact that situations or topics or themes have in their lives.
Trends come and go. The current trend in entertainment is for real situations. The rule of thumb is if you respond to a trend, you're too late. Interest will have dropped before you can get from first word to the screen. If you are writing about true events, remember what stories are really about.