The dinosaurs once ruled this earth and they are extinct. Humans are heading the same way by their actions. The earth won't be bothered, it takes back what it requires and starts a whole new rebuild, one species dies and another begins and then thrives, the earth is in control of its own destiny and we are just contributing to the acceleration of human destruction. Yes we can take control of the timescale but when the likes of Trump refuse to see their country CO2 output as a problem, then there is very little anyone else can do to counter.
Please be very careful about what you say about Greta, some of the comments about her autism are already close to discrimination and offensive. Try living with it before you feel compelled to have an opinion.