Greta's Dad (Svante Thunberg gave an interview where he claimed that Greta was depressed and unhappy until she found a cause, and that he and her Mom were against it, and this is all her, and she drives them. Of course someone that's using her as a false front for their own activism would say that too, so there's no way to know if that's true... me thinks thou doth protest too much. Then due to a Facebook update (and a bug/glitch) that showed which admin is actually editing posts, it is exposed that her Dad does the editing/updates. Greta replied to the "scandal" that she does Twitter and Instagram and an Indian guy just does the reposting to Facebook using her Dad's account. Since it's hard to know who is the puppet master, and the intellectual maturity of her tweets do match that of a teenager or climate activist, the reply is plausible. But it's also plausible that Greta is just a tool and a figurehead for her Daddy and others agenda, which might explain her anger, immaturity and depression at being a tool. And she is a tool, we just don't know who the operator is.