Point taken.
But when the drawings contain generations and generations of garbage, carried in from every block and entity they ever dropped in from another party's drawing, and multiplied by using one old drawing to create another over and over (instead of starting each one from a refined and dedicated prototype) you know by looking at their drawings that they really have no clue how this works against them.
Since we work (to a degree) from the basis of their electronic files, and they generally do not work from ours, I have no qualms about dumping their ovehead.