The apparent downside of burning carbon is much greater than the downside of developing drugs that will eventually become less useful.

They're not just less useful. You're creating new superbugs in the process. Meanwhile, rainforests are disappearing, which likely have plants that offer sustainable solutions.

You're heading down an unwinnable path with antibiotics, and creating new superbugs. You're running out of time to discover a real fix, because rainforests are rapidly disappearing. So yeah, the analogy is apt.