In other words, UI manages monolithic state by definition. Whenever you're able to completely break off from the monolithic state, then probably that logic can

In other words, UI manages monolithic state by definition. Whenever you're able to completely break off from the monolithic state, then probably that logic can be its own app. Typically this is not the case with widgets on the same screen. Usually you want UIs to display integrated data of some kind, that is intertwined with the rest of the app somehow.