Why is that wrong ndsol? closing and locking the cockpit door securely and not opening it even if people in the cabin are being whacked solved all the 9/11 security problems.

the TSA performs it's intended function - to keep the sheep afraid, and therefore malleable, and used to inconvenience and arbitrary loss of rights. It's good to have the sheep not question authority. If the TSA were predictable it wouldn't perform that function as effectively.