The reason you don't hear about Greta anymore is because she didn't let her conscience stop at climate change. She's a left wing activist fighting for social justice in all things.
The rich will mold her image in history the same way they did for MLK, leaving out all the aspects of her politics that make them squirm.
The ability to admit fault and learn from your mistakes is the most important quality that separates a grown person from an actual adult.