The key word there is action. If you look up the definition of deception it has words like "use" and "action". In other words deception is a deliberate choice not a unintended consequence. Someone can be mistaken unintentionally but not deceived unintentionally.
1. the act or practice of deceiving; concealment or distortion of the truth for the purpose of misleading; duplicity; fraud; cheating: Once she exposed their deceit, no one ever trusted them again.
2. an act or device intended to deceive; trick; stratagem.
3. the quality of being deceitful; duplicity; falseness: a man full of deceit.