That’s not necessarily odd. 2001 (that movie is from 1968) had all sorts of flat displays, even small TV pads. Paper already is flat and has been forever, so the concept of flat displays is not even innovative or new, it’s all just about overcoming technical hurdles.
(That said I would certainly like to know more about this video, who produced it and for what purpose.)
I figured the concept for the display devices was based on microfilm/microfiche readers rather than CRTs. Microfilm was "high-tech" back then, and Vannevar Bush's Memex (of a couple decades earlier) was microfilm-based.