I’m not sure I agree with Andrew Russell’s thesis in The Conversation that “people are searching for ways to escape the fast pace of the modern world” and choosing slow cinema as a way to achieve this.
Slow cinema is all about tension and release. The filmmaker builds tension by making the audience wait. I suspect its popularity for a slower paced film may have more to do with peoples habit of bingeing through ten hours of serialised drama. Audiences have more tolerance than ever before for stories building over time.