I would quit that job immediately! I'm not even being sarcastic. If it bothers you that much that people like to plan things and that takes too much time according to you then yes, just quit. I've been on the other end of things where someone said: "Oh, I can implement this in 5 minutes". The first few persons I would happily explain why this isn't the case, but after that.. thank you managers for isolating me from this crap.