Glad to see that working still! Torrenting over I2P is sort of a fail-safe option for people in somewhat oppressive places where VPNs may be illegal. Also, with the recent port-forwarding removal in Mullvad, this makes it harder moving forward to try and seed content without being able to make a direct connection with open ports.
Yes, I did exactly this when I2P support was first in beta. I have a docker stack with Gluetun as my network for all my *arr containers and I was able to still point my qBittorrent to my i2pd router and it worked just fine.