People, check his vid... It's CGI ALL DAY LONG...
On any non-cloudy night, I can go and pick out the constellations of Orion, the BIG Dipper, Canis Major, and others...
It's ALL CGI!!!
Query me this Einstein...if they can fake all the shit you are saying they fake....don't you think they can fake the sky as well to add stars that should be there? Of course they can. In fact Neil Degrasse Tyson consults on movies to ensure that the exact sky is generated for the time and place of scenes.