It would just buy us some time to actually address climate change. Currently, we have done nothing except make it exponentially worse. If we don’t have a blanket, we will definitely all die. If we have one, we might get a few years and make it. It’s better than nothing. Literally. It’s the only option.

And our governments agree:

https://www.nytimes.com/2024/04/02/climate/global-warming-clouds-solar-geoengineering.html

“Every year that we have new records of climate change, and record temperatures, heat waves, it’s driving the field to look at more alternatives,” said Robert Wood, the lead scientist for the team from the University of Washington that is running the marine cloud brightening project. “Even ones that may have once been relatively extreme.”

Brightening clouds is one of several ideas to push solar energy back into space — sometimes called solar radiation modification, solar geoengineering, or climate intervention. Compared with other options, such as injecting aerosols into the stratosphere, marine cloud brightening would be localized and use relatively benign sea salt aerosols as opposed to other chemicals.

They also have floated the idea of releasing sulfur into the atmosphere, getting the idea from increased warming after shipping emissions (which include sulfur) were reduced.