Well, did Andropov respond by going into talks? Did Chernenko? If that was merely calling the Soviet's bluff, it didn't achieve much.
And from what I remember, it made sense then to react to the SS20s.
Do you remember arguments about movability and multiple warheads? Those aren't qualitative changes. *Traitor*, n. A benighted individual who perceives an illusory distinction between serving his nation and abetting the criminals who govern it.