If you don’t know how bad it will get, how can you balance the negatives of remediation?
For example, if the world was ending next year it might make sense to turn off all fossil fuels and eradicate most of the human population. But if it is only a few degrees per century we can consider… better options.
Holy strawman, who said anything about eradicating most of humans?
Let me rephrase: realistically speaking, the things humanity will manage to do in the next 10 years will be such a lukewarm attempt that the chance we will "accidentally" overshoot and create more misery is close to zero.
For example, if the world was ending next year it might make sense to turn off all fossil fuels and eradicate most of the human population. But if it is only a few degrees per century we can consider… better options.