Um, what are you talking about? Star Wars wasn’t shot in CinemaScope. Where exactly have you heard that Star Wars was filmed in CinemaScope?
IMDb said so, 2.35:1. If that doesn’t prove it, I don’t know what does.
That doesn’t mean CinemaScope. That just means anamorphic 35mm.
2.35:1 anamorphic 35mm which was first pioneered and popularized by…CinemaScope.
It’s still acceptable to refer to that particular format as CinemaScope even if it’s not technically accurate. It’s easily the most recognizable name for the format and even people in the film industry use the word “Scope” as short hand for 2.35:1 35mm.