Making science fiction novels or movies to tell everyone about the bad consequences of a potential technology seems completely counterproductive, in retrospect:

• First, because it just encourages some subsection of engineers a few decades later to actually build it. See: https://twitter.com/alexblechman/status/1457842724128833538
• Second, because all attempts to prepare for the advent of said technology are then shot down with: "Oh, like in ${X}? What is this, a science fiction novel?"