We’d had Star Trek for two years by that point. It really was not that groundbreaking.
Star Wars came out 9 years after 2001 (edit: and the original series Star Trek doesn’t have near the realism of 2001). The visuals absolutely were groundbreaking -- they still hold up, and look better than all but a handful of space movies that came out before about the 90s.
Your point with the pacing is fair, but I think about half that is an artifact of the time or a byproduct of watching it on a couch with a smartphone instead of in a theater.
If you still think Democrats actually care about a potential mass deportation, ask yourself why Biden hasn't simply pardoned all undocumented immigrants.
Immigration offenses are federal crimes, the president can pardon federal crimes, and you don't actually have to be charged with anything or convicted to receive a pardon (see Nixon).