Were many of the aforementioned advancements marketed as "replacing developers"? Absolutely. Did that end up happening? Quite the opposite; each higher-level abstraction only caused the market for software and demand for developers to grow.

That's not to say developers haven't been displaced by abstraction; I suspect many of the people responsible for re-wiring the ENIAC were completely out of a job when punchcards hit the scene. But their absence was filled by a greater number of higher-level punchcard-wielding developers.