What a terrifying thought.
This originated from a sub-genre of science fiction.
The sub-genre falls under the theme of time travel, specifically single timeline time travel.
In this sub-genre, any efforts to alter the timeline are futile because the original timeline has already incorporated the changes made by the time traveler.
The most famous novel of this theme is by science fiction master Heinlein, titled "All You Zombies", where every character in the story is actually the protagonist themselves, with the protagonist alone forming the cause, process, and result of the entire narrative.
Anning has also seen the domestic interpretation of this theme in the world of science fiction.
In that story, the protagonist and his close buddy are warriors in the Resistance Army or something, planning to execute a major operation, but the enemy becomes suddenly alert, gunfire erupts, leading them into a desperate battle, and eventually, the buddy dies.
