Worth remembering: the original windowed interface on Xerox machines was a view into underlying system objects. It was designed around a unified vocabulary of interactions that allowed user to message those objects and also direct inter-object communication:

https://www.youtube.com/watch?v=Cn4vC80Pv6Q

Xerox -> Apple -> Microsoft interface transfer preserved nothing of those core concepts. UI became a crutch developers grudgingly added to the system for "those stupid users". Thus, most software engineers today are still convinced that a teletype emulation is the best possible interface to the underlying OS that can possibly exist. Also, normal users are treated as second-class citizens in their own systems.