I agree, the teams that cause the biggest messes are, in my experience, the ones that passively receive requirements from POs, without thinking about the concep

I agree, the teams that cause the biggest messes are, in my experience, the ones that passively receive requirements from POs, without thinking about the conceptual integrity of their domain. However, complaints about stories taking “too long” sometimes are complaints that people are trying to do a better job on a story than specified.