At least in arch, the package qbittorrent-nox now contains the ability to connect to i2p. For people starting out, using i2p you wouldn’t need to use a VPN to download your favorite “linux ISOs”; just use i2p and have a fully automated Jellyfin server!
I recommend using i2pd as the i2p router
So how does one actually use I2P?
if you install java i2p it should come with the browser and torrent client (i2psnark) pre-packaged
for i2pd (c++ implenetation) you have to configure firefox (i use librewolf with noscript) to use the http proxy (on port 4444).