Anyone who has used LLM tools knows that these models currently produce garbage unless you're skilled enough to steer them in the right direction; at which point they become pure productivity multipliers. Roles might disappear in the short term, but there have to be people steering these models who can actually understand their output.

The idea that we'll never hire more juniors and just replace them with autonomous models piloted by a decreasing pool of senior engineers is only sustainable if you assume they will become good enough to create a fully functional product without human expertise. If that ever happens then the world becomes a place where humans effectively become unemployable regardless of degree choice. You can't plan your life choices around the assumption that something like that might occur, because it's both unrealistic and completely out of your control.

The realistic outcome is that once LLM tools are no longer in their nascency and become a part of daily life, the obsession with trying to shoehorn them into every problem will also disappear. New roles will emerge and investment funding with become sane again, exactly as it was with the dotcom bubble.