Typically in a community the people who care about a subject discuss it and those who don't do not. If a poll revealed that 90% of the community did not want the topic discussed but a small group kept discussing it, would that insulate the community from damage to any extent?

To an extent, but not enough to matter. The topic of child porn is one of the most socially toxic subjects out there, and even being peripherally associated with it can be a life-ending event. Careers have been destroyed, men have been unmade, and Bad Stuff Has Happened in the name of this topic. It does not have to make sense; it does not matter why. What matters is that it is so.

If for no other reason than self defense, I feel these discussions should be blackholed and discouraged with prejudice. We are a rationalist forum, with a specific goal, and the very presence of this topic risks our work. Again, it does not matter that it is unfair, it does not matter that it does not make sense: what matters is that it risks our work, in a nontrivial way.

Your goal is to discuss these topics. Our goal is to spread rationality. These two goals are in conflict for reasons beyond the control of either party, reasons which may or may not make sense but which nevertheless are powerful enough to unmake both of us.

I will not help you in your goal, as it conflicts with mine. I will encourage LW against helping you with your goal, as I feel it conflicts with and is damaging to theirs.

And finally, I recommend you push your agenda on a different forum. I would prefer you not return until you are willing to contribute positively to the core mission of LW - that core mission being the spread and improvement of rational thought processes in the general population. As it stands right now, I feel you have contributed net negative utility to the core mission of LW with your posts, and it disturbs me that you seem unable to see that or understand why.