>>940078006
Many good reasons.
Per capita, people in western countries create many many magnitudes more carbon and methane than asian countries. Relatively insignificant changes in the western lifestyle can make a greater impact than what individuals in developing countries would have to do.
China is adopting sustainable energy at an rapidly-accelerating pace, and bringing on all BRICS energy infrastructure with them. Energy execs and congresspeople who recently visited China were stunned at how far ahead they are in resilient and efficient energy infrastructure.
Finally, Greta is Western, she speaks several western languages fluently, and people in the west have been listening. That is her audience where she is most effective. Asia has it's own home-grown environmental activism already.