I understand your point of view. To further save us typing back and forth, it boils down to you valuing free speech above moral implications vs. me applying a morality that is greater than free speech.
A quick note, I believe free speech in and of itself is a moral issue as well.
No it's more complex than that. The big issue is "Who decides what's cp and what isn't?" That's where censorship comes unstuck because someone has to apply a ruling based on their moral position and "their moral position" then becomes the interpretation for everyone else, which takes us right back to centralisation and control.
I'm almost gob smacked we're needing to have this conversation. The technical complexities of filtering a "DarkTor" are absurd in the extreme. The legal/responsibility and actual "who/when/how" of this censorship is a whole other consideration that takes the concept to even greater levels of infeasibility.
Honestly, you're in the wrong place if you can't understand just how incompatible is the notion of excluding certain types of content from a private/anonymous network. As cyanez has pointed out, the concepts are mutually exclusive and would completely kill this project if attempted.