This blog post from a few years ago suggests that using BitTorrent services over Tor is a bad idea for multiple reasons. However, it also suggests some fixes to get over these problems.
Is using a
It doesn’t make you anonymous. Torrent protocol wasn’t designed with anonymity in mind and there are a million ways you’re going to leak your actual IP address.
Tor is a TCP only network.
While this doesn’t give you the anonymity you wanted, it will hurt the network for other users.
On i2p everyone is a node but not everyone is an outproxy to the clearnet, you have to enable it manually.