My hunch is that AI tools are probabilistically good enough to deceive most casual users in the beginning, so beliefs are built on these foundations. LLMs handle simple tasks reasonably well so their perceived 'intelligence' is easily convincing for many users (often managers and executives).
However, this illusion immediately falls apart during actual stress-testing like writing code for a complex, battle-tested production environments. Non-technical folks can effortlessly spin up simple web apps or tweak a frontend so now they conclude that software engineers are becoming redundant.
And even if there are obvious examples of all of this backfiring no one believes it...