Ghost gun does not mean 3D printed. It’s a very frustrating new connotation, as someone who would very much like people to stop assuming 3D printing people all print out guns or whatever.
Ghost gun means it isn’t traceable in the same way that non-ghost guns are, be it because the serial has been filed off or never existed or what have you.
I’ll be happy to change my tune when the trial sets out the facts, these facts at least aren’t overly-controversial so I have no reason to distrust them when the come out in court. Mostly just a decade-long hobbyist watching regulations come out of NY already (background check for a fancy automatic hot glue gun, wow that sure is saving kids good job) that set them against 3D printer ownership in general and becoming frustrated with the connotation and how it taints perceptions of my fun cool hobby. I wouldn’t be surprised if the chief is just saying buzzwords that play well to the media based off of misunderstood reporting by his subordinates that then gets spun into “he totally 3D printed 50 guns” or whatever.