If I ever have enough money, I’m thinking of setting up my own small server and migrating Lemmy to I2P. A Lemmy instance with the same features, but running on a completely free and anonymous network. Everything will be allowed except for moderation regarding serious topics and spam. It’s a nice thought, even just imagining it.
My concern would be federation. I don’t think the fediverse is set up so you can run the same service on the clearnet and dark net.