Building starships on the ground ... no, never, and after years of posting and refuting and this and that I'm through arguing about it, because it is too much like dealing with flat-earthers. Have fun w/ your magic box tech.
So the ship that can break the light-speed barrier with the use of magic crystals can't be built on the ground? It has a matter/energy transportation device, but cannot be built on a planet?
I guess everyone's got their line. This one just seems a bit unrealistic in the unrealistic world of Trek.
That can indeed be a judgment call.
True story. When I was writing my Gary Seven books, I originally included a scene in which Roberta Lincoln learned how to turn into cat like Isis, but my editor thought that was going a bit too far.
Probably the right call.