"Heck my computer requires that I confirm I want to delete a file, it can't be that difficult."
In the computer there is a single action that can select any of up to dozens of actions to be performed on the file. One right clicks and then rolls the cursor down a list, an action with no physical feedback about which action is being selected, using a control that might initiate several thousand actions each hour.
Were the engine shutdown tied to the movement of the control wheel, then adding a confirmation would be required.
Perhaps, for confirmation, one would have series controls on opposite sides of the cockpit, like the turning of keys in a nuclear missile silo, for such critical controls. Both have to change state for the state to change.