I would had appreciated your feedback and loved to dive into a discussion with you about my approach — but the overall tone of your piece let me believe that you aren't interested in such. I just can tell you to use it once for yourself. I myself have a coding kata that I implemented in minutes where I needed at least a weekend in more conventional OO. you can read about it here: https://medium.com/codex/declarative-diplomacy-in-swift-c32a07101c9f