Climate change is undisputed, but the man made part is. This has become an ideology and some entire industry living on being funded on fear.
It is good to protect the environment but we are not doing it with new copper cable networks and lithium mines all over the world. This is somebody else's economical interest that gets communicated cult style and simplified in the digital media age.
In fact Greta is a
PR company's child. Google Ingmar Rentzhog for starters.
https://pluralist.com/ingmar-rentzhog-greta-thunberg/