The shows in question generally a) hire specific writers for this, and b) don't really give that much care to this. Even Trek, which had a manual that detailed

The shows in question generally a) hire specific writers for this, and b) don't really give that much care to this. Even Trek, which had a manual that detailed the fictional systems in depth (The TNG Technical Manual was a writer's guide written by the artistic directors), let it slide for the point of the plot. And ultimately, these snippets are just filler that add background to the world in question. To people who aren't you, or me, they do not matter all that much.