I think I figured this one out, why we have so many rocks fall on the floor when there is a ship battle in Star Trek and the answer is stupidly obvious.
All the ships have Trellium D lining the inner walls of their ships and despite the expanse not existing anymore the Federation never rescinded this design element.
All the ships have Trellium D lining the inner walls of their ships and despite the expanse not existing anymore the Federation never rescinded this design element.