I think it's weird that people react so negatively to geoengineering when the status quo is that we're changing the climate adversely just by thoughtless inaction with respect to reducing CO2 emissions.

I do agree with the sentiment though that solar radiation management doesn't actually solve anything in the long run. We need to remove CO2 from the atmosphere in large quantities and raise the pH of the ocean, and SRM does neither -- it just buys time for modern civilization.

I think we should study SRM because we're going to do it anyways eventually -- I don't see a plausible future where we don't. At the same time I feel like we don't have the moral authority to smash the snooze bar one more time unless we're actually doing as much as we can to cut back on CO2 emissions. Maybe a fair policy is to have an international treaty that says: no country is allowed to do SRM or have any say in how it's performed unless they've actually become carbon neutral. But then maybe that's too rigorous a standard and no one will meet it.