similar yes but not the same. tor held together by volunteer that run nodes, i2p everyone is a node. tor good for clearnet things, i2p good for in-network things. torrenting in i2p is good for i2p, not tor. torrenting in i2p stays in the i2p network, doesn’t go through exit nodes. there’s only about 3 of those. it’s torrenting as a darknet hidden service.