Your premise is that something should be done. Censorship resistance is not a bug.
None of this is censorship. If people want to look at dirty photos then I honestly don't care, it's none of my business. I would, however, like to be able to run Freenet without those being served from My computer.
We're planning a reputation system based on the idea of "web of trust" that should ensure you don't get exposed to anything you don't want to be.
It's based on a system[1] by the same name in the original Freenet that was used to prevent spam, and which worked well.