I'd agree
It's not like encryption is poorly understood, or especially difficult. It provides only a minor inconvenience for the legitimate user, but a damn high brick wall for all others. "Convenience of use" and "state secrets" probably shouldn't be picking out drapes together.
Still...if someone steals your car because you left the door unlocked, it's not quite right to say "you deserved it." The thief is still in the wrong.