I assumed that the main reason for the ICE option was to make hacking us in general really hard, no matter what option we picked. Since being able to do stuff like drive someone to suicide or just mess with their heads tends to be pretty bullshit and something you'd want defenses against.
Also, this is exactly what the ICE option is, it's just a passive flat defense against hacking of all types, it just happens to be a very good passive defense.