Developers too often seem to think they know everything, when (esp on large teams) often they have zero idea what it takes to bring their ideas to the real world. It takes serious designers to develop a scalable app, even if lots of people think they know how. I work in production support of multiple websites, meaning I have to clean up after the mistakes developers make on a daily basis. The support folks who have to write patches for our products often grieve over the situations the original developer placed them in. It often takes a major rewrite to fix many performance issues, because the original programmer never imagined all the different situations their code would be used. Prod support is where the real issues are discovered and solved. Accept it and move on.