"it is nearly-impossible for any actor to block access to this content because it is replicated around the network automatically, using peer-to-peer encrypted connections that would be very hard to identify and block at the ISP level. "

It's right that the connections are encrypted, but it's NOT correct to say that content is automatically replicated (but it's a common misconception). Instead, content who is wanted by other peers is the only content that gets replicated. You need to explicitly "pin" content to help replicate it.

This is different from Freenet where content is indeed pushed out to other peers in that fashion.