@mudeth @pglpm you really don't beyond our current tools and reporting to authorities.
This is not a single monolithic platform, it's like attributing the bad behavior of some websites to HTTP.
Our existing moderation tools are already remarkably robust and defederating is absolutely how this is approached. If a server shares content that's illegal in your country (or otherwise just objectionable) and they have no interest in self-moderating, you stop federating with them.
Moderation is not about stamping out the existence of these things, it's about protecting your users from them.
If they're not willing to take action against this material on their servers, then the only thing further that can be done is reporting it to the authorities or the court of public opinion.
@scrubbles My favorite early moment was him firing people based on lines of code written... which of course meant he fired all of his best because the worst programmers write many lines that do less while great programmers write few lines that do more.