> This might be on me and my lack of capacity to exploit the tools to their full extent. But, iterating over customer requirements, CI/CD, peer reviews, and business validation takes time (and time from the most experienced people, not from the AI).

Yeah, you're certainly not the only one. For me the implementation part has always been a breeze compared to all the "communication overhead" so to speak. And in any mature system it easily takes 90% of all time or more.