This is pretty successfully done in the western world, you really dont see it. When they bust people for it, it's always TOR or whatever. But it's literally uncensorable. Child porn is explicitly legalized all over africa and asia. What are you going to do? Go to their sovereign country and tell them to stop? What if they tell you no?
Censorship even on this subject is effectively impossible.
So flipside, how about subjective political issues. Age of consent isn't much further from this subject and there's literally no correct answer. Middle east sometimes has 6-8 year old girls in arranged marriages. Africa and Asia age of consent is somewhere around 10-12 often. So can we censor this subject?
How about other hot topics? Gender roles, gender identity? Again big differential in the world. You literally can't censor the subject but boy do we ever.
What does this censorship do? Make people think that the issue is solved or unified? No. Clearly the censorship doesnt work, and instead shines a light on the issue and radicalizes people on the subject on both sides. Often making things much worse.