Guys MAD is a completely irrelevant concept nowadays. Nulcear weapons continued existence are far more of a threat than the fake safety of "MAD". The US having them encourages proliferation, increases the chance of sabotage and really puts enormous pressure on the military to avoid mistakes.
Plus nearly every post-Curtis LeMay military tactician has realised they're tactically useless white elephants.
It was irrelevant when it was conceived because everyone knew that US power was based on preventing nuclear war, whereas USSR's power was believed to reside in nuclear proliferation and territorial conquest.
MAD was a thing because they didn't know what else to do. I doubt MAD has anything to do with our new nukes.
