They have definitely replaced jobs! There are tons and tons of sites and applications now that have been built with these tools and otherwise would have been built by software developers using wordpress or drupal or rails or whatever.

But that doesn't mean the developers who would have otherwise done that work were just disemployed by the success of these tools. No, they just worked on different things.

And I think that is a valuable lesson that can be applied (though I think not perfectly) to this LLM era.