It seems to be that Greta Thunberg et al are just out to get at people, no matter what people do , or politicians do, it is branded not good enough.

If an adult treated a child like that, constantly saying you are useless, not listening and not good enough it would be seen as a form of child abuse (psychological abuse)

https://www.bbc.co.uk/news/uk-scotland-glasgow-west-59116611

Could make people thing why are we even bothering when what ever small steps we take, will never be good enough.