Rx as read only

[RafaRuiz]

I would like to start my discussion as I came to this library, years ago, as an Android Developer, Rx(n)s work the same way than LiveData. This is based on a MVVM structure, but when the base for Android was to do something like (this would be done in Kotlin but I'll translate it into Dart, respecting the Android words):

abstract class MyController extends GetxController  {
  LiveData<T?> get reactiveLiveData;
}

class MyControllerImpl extends MyController {
  @override
  final MutableLiveData<T?> reactiveLiveData = MutableLiveData();
}

this way, the view of reactiveLiveData would be immutable from the UI, which is the base of MVVM: UI listens to reactions to the ViewModel (in our case, our GetxController).

Would it be interesting to create a parent class of Rx and Rxn that is immutable from the UI point of view?
I have been working with many developers who claimed to have worked with Android in the past, but at the implementation time, they were lazy to do it properly and they were accessing from the UI to the Rx's value.