i'd like to take a little step back from the immediate conversation and direct you to the video below -- a 45 minute interview of greta on democracy now.
at the very least, you will come to know how to pronounce the name correctly. the rest really depends on your sensibilities. to me, it's like the improbable spectacle of witnessing an elizabeth gaskell heroine come to life in my era.
#1 if we leave aside strict grammatical quibbles, the english competence for someone who didn't actually live in an english country is remarkable -- to what extent this is attributable to the education system in sweden or the condition the medical establishment has diagnosed her with, i don't know (though, as a professional in the broad field, i have little faith in the latter), but it's seriously impressive either way.
#2 compare the leader of your nation and what he or she would have had to say in similar circumstances, in native language. canada fails for sure, big time. USA, of course: you really deserve being invaded by a benevolent imposer of true democracy like yousrself.
#3 during the interview, greta makes quite clear that she is "merely" raising awareness and that it's the scientists we need to listen/speak to about what to do. the porsche-driving people here may want to think about that before working up straw-woman outrage over the lack of impact they claim she's had (from the vantage point of the exclusive social realm in which they exist).