The author wishes more intellectual movies were made instead of action movies.
That’s kind of a broad issue to blame on Star Wars. If not for Star Wars’ success there probably would have been a lot fewer Sci-fi movies made.
I disagree with the author’s premise.
There were plenty of sci-fi things (radio, TV, movies, comics, etc.) before and after Star Wars.
The marketing (which led to the cultural phenomenon) is what differentiates Star Wars, IMHO.