... He does realize they can't just shit on international organizations like the UN and USAID and expect the rest of the world to follow them tow in line, right? Specially given this will affect those regions for whom climate change would actually be beneficial.

Anyway, this sounds more like a bullshit excuse to do nothing about the causes of climate change. This would have excessive costs of the solution and the maintenance that would likely have to be footed by society and not the people who do everything to avoid taxes like Musk. This would give polluters an excuse to pollute more and a way to put even more chokeholds around societies.

But even more fundamentally, climate change is due to things like carbon dioxide basically reflecting heat back onto the planet. Dampening sunlight doesn't just block heat, it dampens the entire electromagnetic spectrum. For a speculative solution you would be adding additional problems ecosystems would have to deal with.

How about narcissistic self-obsessed psychopaths stop trying to milk society for all they have as fast and much as possible? They can start by paying taxes and not engineering entire political programs to subvert democracies for personal gain.