To be clear - in 1966 using familiar star names WAS world building. “Ok I’ve heard of that” was cool and likely unique.
Why would it be unique? Obviously the stars most people have heard of are the first ones that any TV or movie writer would refer to, so I don't see why you'd imagine it was rare. Forbidden Planet was set in the Altair system, just off the top of my head. Lost in Space, of course, made constant references to Alpha Centauri. Looking at Wikipedia, I find references to a 1920 silent film called Algol; Robinson Crusoe on Mars featuring aliens from Alnilam; Moon Pilot (1962) featuring an alien from Beta Lyrae; Barbarella crash-landing on a planet of Tau Ceti; The Time Tunnel featuring alien villains from Canopus; etc. And in comics, you've got Adam Strange going to a planet around Alpha Centauri, Hawkman coming from a planet around Polaris, etc. This was commonplace in mass media, and of course even more so in prose.
Star Trek was innovative for '60s TV in some ways, but this is not one of them.
Hence Jupiter 2. What does Jupiter have to do with interstellar travel?
What did Mercury have to do with putting a man in orbit of Earth? What did Apollo, a sun god, have to do with going to the Moon? These names aren't always literal.