Islands in the Stream is a 1977 American drama film, an adaptation of Ernest Hemingway's novel of the same name. The film was directed by Franklin J. Schaffner and starred George C. Scott, Hart Bochner, Claire Bloom, Gilbert Roland, and David Hemmings.
Although the name is the same, the drama film is much different than the novel.
The statement only gives a comparison based on the name.  As it is an adaptation of the novel, it is most likely subjective based on those who have read the novel or seen the film.