Agreed so let us loop back to your question (paraphrasing). What will the world look like when code is cheap.
Many finished products but some still finished better than others by people who care about making a good product that fits the users needs. Just because you don’t care about the craftsmanship doesn’t mean the end product doesn’t reflect the creators attention to detail or quality. To me that will always be the signal.
AI is a tool and some will use it better than others. The signal will be there in the noise of all the crap that doesn’t appeal to you as an individual

