> IPFS, Freenet, and experiments like that
> a libertarian decentralized P2P E2EE communication project
Your argument makes sense for Freenet (though I'd personally defend that project too); but not so much for IPFS.
Firstly, IPFS doesn't have any encryption (E2E or otherwise).
Also, Freenet spreads data around the network (for robustness and plausible-deniability), so the peers providing a file are not the peers which inserted it. IPFS does no such thing: if you want your content to remain available, you'd better be running an IPFS node that provides it.
Either way, it feels like a pretty bad idea to host dodgy stuff on IPFS.
IPFS is much closer to HTTP. The difference is that content is immutable, and can be re-hosted by anyone that happens to have a copy (e.g. no need for mirrors, etc.).
(Note that HTTP was invented to disseminate physics research; not CSAM)