Does this speed of development only apply to the early stages, or will it slow down as the codebase grows? I have yet to see these 100x improvements (and the claims themselves keep getting bigger) on anything more than prototype scale, rather than month-long projects.

No doubt AI boosters will claim we have found an O(1) productivity enhancer that is somehow two orders of magnitude better than anything else before. This is entering lunacy territory.

And it shows!