I'm glad that the author mentioned sagas - this is one of the most underrated parts of using Redux and it makes a huge difference in async code. To be able to define complex asynchronous tasks as a series of "take", "call", and "put" has significantly reduced the number of bugs in our async code.

Another point for Redux: it makes it much easier to understand bugs, both locally and remotely with a tool like our LogRocket (https://logrocket.com)