Alr. Let's take Jonathan for an example. He harassed people, brought up genders, JUST to cause drama, and acted immaturely when getting temporary ban. But he was a favorite among this stream, so he never got banned.
Kawaii, on the other hand, was mature, and she was only banned because she was honest about her age. If you have no proof or no reason to ban her, she shouldn't be banned. The people in favor of banning her don't have any strong reasons or evidence that they should, other than "ban her because she's underage." If you want to try to get her to stay banned, you're going to have to bring some better evidence.