Yes, this must be it. Real-world UI design aims to be as easily understandable and usable as possible, even if it falls short. In movies, they want to convey th

Yes, this must be it. Real-world UI design aims to be as easily understandable and usable as possible, even if it falls short. In movies, they want to convey that the hackers/astronauts/super heros have deep expertise. It would be frustrating if you saw them using a familiar Windows Start Menu because you'd feel like you yourself could just step in and do their job. They could (and for hacker movies, sometimes do) just use a command line, but then it's hard to convey what they're doing to an audience. For a similar reason, important text in a fantasy UI is impractically large, so it's visible when the UI itself is only a fraction of the movie screen.