True, though the security concerns of weapons in a courthouse surely justify a baggage scan, metal detector, and pat down. Security is far more of an issue in a courthouse even than on a plane.
Having recently been on a jury, I wish airport security was as hassle free as a courthouse in Massachusetts, where my bag was x-rayed with my laptop in it, and I walked, shoes on, through a metal detector.
I also agree that, in practical terms, security at a courthouse faces many more real-world challenges than air travel.
That should tell us something about appropriate levels of security.