Until we demonstrate the ability to actually perform meaningful feats of geoengineering and the sustained willingness to commit trillions of dollars to it, this proposal is basically science fiction
Just noting that realistic or not, this solution is probably desirable by ~4 Billion humans. I’m not sure the (not less fantaisist) geoengineering solution is even comparable in term of popularity.
No disagreement, but we don't have a choice. Even if every westerner agrees to deprive ourselves of modernity, the rest of the world will not oblige, and they have >5x the population, all demanding smartphones, TVs, meat, AI, fast fashion, imported goods and much more.
Deprivation is guaranteed to fail, so I'm betting on innovation.
For reference, the median per capita household income is a little under $3000/year [0].
[0]: https://www.zippia.com/advice/average-income-worldwide/