The document discusses issues with the MVC architecture on iOS and proposes using the VIPER architecture as a cleaner alternative. It describes how the VIPER architecture splits code into layers including View, Interactor, Presenter, Entity and Routing layers. This decouples the logic from the UI and makes the code more reusable, testable and maintainable by separating concerns. The document provides examples of how specific responsibilities like handling user input, business logic and data access would be implemented using VIPER instead of the default iOS MVC implementation.