When an AI does create a web page successfully in terms of replacing what a human can do completely, it will probably make the code in such a way that it is unmaintainable because why make it maintainable? We would not have to maintain it anyway. It would be like spaghetti code yet would look amazing on the presentational side. No one would give a damn anymore about coding styles or elegant frameworks like react, you could just bark at it and it would morph around. Sites/apps would just be thoughts you could construct on a whim that typically changed frequently or autonomously to produce the maximum desired result. Meanwhile we're sucking down nutrient packs floating in stasis in our travel pods spending the majority of our time in virtual consciousness.