This sounds a lot like a global governance scheme, or conspiracy theory to those who refuse to believe some people want to destroy all national sovereignty. They aren't hiding their agenda. They are using children and a made up "global crisis", just like past dictators, to arouse emotional support to completely alter global governance. Little greta is nothing but a pint-sized Minister of Propaganda, just like the nazi's joseph goebbels, but on a scale him and his boss were only dreaming of.
"...climate crisis is not just about the environment. It is a crisis of human rights, of justice, and of political will. Colonial, racist, and patriarchal systems of oppression have created and fueled it. We need to dismantle them all. Our political leaders can no longer shirk their responsibilities."