Hmmm... It sounds to me as if some of you are jealous of GT. Don't be. With her Aspbergers she faces many challenges most of us don't.
And yet, she was able to bring climate change to the world's attention in the way some of the most distinguished scientists could not. Yes, sometimes she looks or sounds a little odd b/c of her disability, no doubt. But she had the courage to stand up to the United Nations. How many of us could do that?
She wasn't criticizing you and me, she was challenging the world leaders. No doubt, she exaggerated, but isn't that typical for teenagers? The point, IMO, is that young people are watching, and young people are the future - these leaders have young people's future in their hands, etc.
I applaud GT for standing up for the environment and her generation. Also, IMO, she did a lot for kids w/ Aspbergers, showing that they can make a contribution to the world's needs, too.
Googling shows me that Time chooses the person they think has made the most impact that year, it doesn't necessarily mean they like them, agree w/ them, etc., FWIW.