I did no such thing. Increasing carbon dioxide, keeping all else equal, traps more heat. This isn’t disputable. Hence my refusal to say otherwise can’t possibly be cognitive dissonance.

It might be a good thing to increase CO2. It might be bad. It might be the case that increasing carbon dioxide causes counter balancing effects and therefore increasing CO2 does not increase temperature (I remain skeptical of this but I’m not a climate scientist). But what is beyond dispute is that massively increasing CO2 will cause climatic disruptions while the weather system reaches a new equilibrium.