Remember the time that backstory was just that? Backstory.
Many of the most successful TV shows and movies are specifically built on a sense of their own mythology and world building. Game of Thrones has a series of vast novels to draw on which detail an incredibly complicated social and political eco-system, for example. Backstory, the details of the universes of these tales and the histories of many characters within the stories, provide the unseen depth and ballast to the tale we are being told, the tale we are invested in.
In recent years, however, the trend of this has begun to shift. Our biggest stories within popular culture are now becoming obsessed with backstory not just being developed to enable the narrative, they are instead *becoming* the narrative. Storytellers are actively attempting to try and ‘plug gaps’, for want of a better term, in continuity and canon, believing it seems that audiences are as obsessed with these minor details as the writers of these properties appear to be. We are losing the element of ambiguity, surprise and mystery.
We are losing backstory by exploring too much of it.