I certainly don't think Greta is anything more than a spoilt kid who should be at school. Why has she had months away from school?
She is not the producer, actor, presenter or writer of her life. She is the manipulated inanimate object of her parents activism.
That is one possible assessment. Another is, that she is a girl who learned a passion from her parents, about environmentalism and a concern for the future of our planet. Then her passion grew with the intensity of adolescence, and maybe she has parents who support her passions and interests and look for creative ways to inspire and enhance them. There are more ways for kids to gain an education than just sitting in desks in a classroom.
There are a lot of parents who allow their kids time out of school to train and compete in the Olympics, travel to do aid work in other countries, and sail around the world. There is the family on Sailing Zatara, the Casper Craven family, and Jamie and Behan Gifford, all home schooling their kids on sailboats. Their biology lessons might be snorkeling in the Azores, and their language lessons might be practicing their Spanish and Q'eqchi' in Belize.
Greta has now crossed the Atlantic Ocean twice, visited the US for the first time, and addressed the United Nations. As an educator, if Greta could write or speak informatively about her experience, upon her return, I'd have no problem signing off on a semester's worth of school credit for Social Studies, Geography, Environmental Sciences, Political Science, and maybe Language Arts.
Plus, she is traveling with her father. Have you ever done some extended adventure travel with your kids? Today, some of the best father/child bonding memories my kids mention, are the trips I took with them.