Yes, Greta benefits from having parents who are wealthy and I would guess are also well-connected (media, PR, etc). And yes, she's also very fortunate to have this platform and to have people paying attention to her. She is in a place of privilege and speaking up when it must not be easy for her to do so considering she has Asperger's. She has been successful considering how many indigenous groups who have been speaking out about saving their homeland for years have largely been ignored (we know why that is). Those indigenous groups don't have the privilege or the money backing them to travel and speak about this issue at hand like Greta does. That is certainly not to downplay what Greta is doing at all. I think she's bringing a lot of awareness to climate change which is always a good thing but I'm also a bit skeptical having her be the face of this issue. I really hope this doesn't become a flash in the pan issue and is revisited over and over. Malala Yousafzai is another young activist that comes to mind that had a moment and over the years the media has moved onto other things.
I do agree with her message but I am also cynical that it's already too late and not much can be done. Mega corporations and countries that emit the most pollution are reluctant to do anything as it hurts their bottom line-- money. I'm glad she's drawing attention but I also worry the line of fire she's in. Dissenters are being ableist, making fun of her looks, and dismissing her overall-- as to try to nullfy all the arguments she's bringing up in regards to climate change.
Yes, the Parkland kids have gone off the radar and their momentum has died down quite a bit. A lot of them are in college/university atm. But they also really pushed to get a lot of young voters to vote for the 2018 midterms in the US; which the turnout was an unprecedented high for youth voters. They played a part in that and getting people to see the NRA in an unfavorable light (whose membership is dropping rapidly). So something is still better than nothing but for climate change... I think it's too late and not enough people realize the urgency and exactly what is at stake. Or they're aware but just don't have enough in them at the end of the day to think about how awful our future can be when most people are just barely getting by in their own lives due to wage stagnation, crippling debt, inflation, etc.