How does using Singleton directly inside a View affect the behavior and architecture of the application?

Using Singleton directly within a View in an iOS application leads to tight coupling of components, which worsens testability and architecture flexibility. The View becomes dependent on a specific Singleton implementation, making it difficult to replace or modify logic without changing the UI. This violates the principles of separation of concerns and can cause issues when scaling and maintaining the application.

It is better to use patterns such as Dependency Injection to pass necessary dependencies into the View, which will improve modularity and simplify testing.