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.
You’d need to federate via a clearnet url, so you’d either need to not federate (so basically it would be a forum) or federation would just render it a normal instance that can also be reached on i2p.