I'm not sure what the solution is.. Child abuse is an extremely severe problem. In the future encrypted-messaging may be used by terrorists developing some weapon of mass destruction like a virus. I'm concerned about privacy, but is it tenable to have true E2EE regardless of the harm? For better or worse it seems that human societies will prioritise physical safety over most things.

Even if we have true E2EE, a bad authoritarian regime in the future can simply make it illegal. It's more imperative than ever to prevent such a regime arising in the first place..