My alarmist talking points it to actually engage people like you and who have similar thoughts that think they can't do anything. You absolutely can. And it is time to be alarmist. Not being so is not working.
My point is to work to restructure society at any level you can, to educate, and to stop this myth of perpetual growth GDP as the only indicator of success. It is killing everything.
> E.g. Siberia becoming fertile. Maybe even Sahara becoming green again!
We have a perfectly good world as is, and you want to gamble everything on this?