https://www.intgovforum.org/en/content/dynamic-coalition-on-childrens-rights-in-the-digital-environment They were at the IGF a few years ago, it seems to defend end-to-end encryption. I don't get why they couldn't just launch a conventional civil liberties org.
From what we've seen, their team is actually pretty small, it can't be easy to take on all of these projects. While they're taking the role of a "fiscal sponsor", with the mental health circle run by another small team of volunteers, rather than being more involved, it still consumes resources.