Seems like there are many reasons not to do a fix unless you know it works to some reasonable extent.
Why would they not do this is often a question I've been left with after talking to climate change nihilists. No, it won't fix global warming. But it doesn't cost very much, helps their population and economy, and makes a dent in global warming.
At least they're not turning off perfectly functional nuclear power plants like in so-sophisticated Germany. They're reforesting. Do what you can and try not to make things worse.
[0] https://en.m.wikipedia.org/wiki/No_Silver_Bullet [1] https://a16z.com/2011/11/13/lead-bullets/
And they produce perfectly radioactive nuclear waste nobody knows what to do with right now...
Did I say something to the contrary?
Maybe but it's relatively cheap, and it can't hurt so why not?