But as you said, stopping emissions won’t avoid decades of worsening conditions. I think actually stopping those decades of worsening conditions is more important than a hypothetical “moral hazard” concern.

Frankly, this argument always bothered me. When someone is sick you try to treat both the underlying cause and the symptoms. It would be morally bankrupt and downright ridiculous to say “let the patient suffer, it’s the only way he’ll learn.” Especially if the symptoms themselves could be fatal. And especially when the people suffering aren’t the ones who actually “need to learn.” When millions of people are starving to death in third-world nations or drowning when their overloaded refugee ships are turned away from wealthy ports, will you look them in the eye and tell them it’s necessary because otherwise oil company executives might not be as motivated to reduce emissions?