Eh? You are aware that if Yellowstone were to erupt it would literally mean the destruction of the United States. How is "defusing" the vulcano by detonating nukes "more dangerous" exactly?
>>Naturally released CO2 is harmless.
Again, atmosphere doesn't care - CO2 is CO2. Yes it doesn't count towards calculations that we currently do to model climate predictions, but it's not harmless, and a supervulcano event will fuck everything up, it doesn't magically stop having an effect just because it's natural.