I hate to be a downer, but these fantasy UIs are also completely unusable. They have no actual users, so they can go all-in on flashy complexity without having to solve the problem of "how do I let an expert get work done most efficiently." I have never seen a fantasy UI with spreadsheets, but the fact of the matter is that Excel is much closer to a power-user interface than anything you see in movies.
Not a downer at all; that's the real truth. The visual eye candy is needed because Excel just doesn't excite anybody but power users, and even then only if the spreadsheet model pertains to their expert domain. I have exactly the same feeling when I see terminal output flashing up on the big screens.
That isn't really going against their claim, IMO. Complex and inscrutable is part of the point - only the vaguest notes of "oh, that's their goal" are necessary. It reinforces that you don't fully understand what they're doing.