Different genres will have different emphasis on plot vs. character but good films will not ignore the other completely. If the motivations aren't set up as part of character, than the characters' actions will become directionless, and the audience will become distanced from the film. Conventions were made to be broken For every convention there is a successful movie that defies it. The answer is obviously NO . Female driven action films were and still are avoided even after the success of the Alien series.
People speak differently than they write.
They may write in a very proper, literary way that would come off as stiff, stuffy, and self-conscious if spoken out loud. People's real tendency is to talk in code and avoid confrontation by hiding the literal meaning of the dialogue in seemingly innocuous dialogue. There is a time for heart to heart talks, but the character who wears his or her heart on their sleeve continuously are usually one-dimensional and becomes tiresome quickly. Beware of precocious five-year olds who speak like seasoned psychologists about their parents' love life. Another common fault is a first act that takes too long to set up the story.