This post is overly complex in its suggestion of libraries. He does have a good point of understanding different kinds of state and that state management in front end is perhaps the hardest problem. If you think about it well earlier, a lot of things become easier as you scale.
I agree that libraries for certain things, like MobX/Redux or Formik, may be overkill.
What's more important, though, is that people choose an appropriate equivalent to these libraries. Replace the library, but not the method of organizing state.
For example, feel free to replace MobX/Redux in my post with your own global state management solution. But I recommend replacing it with a global state management solution, not something else.
