Well, I run forgejo for my own stuff. So, let's say I decided to host something that is subject to a copyright complaint. As soon as people start using your repo and their lawyers get a whiff of it, they'll just take the IP of your server and DMCA the owner of the IP. Whether it be me, or the host. It's an entity they can go after and will need to yield to appropriate law. The effect would be the same as the DMCA going to Github.

But on tor, it hides the entity operating and running the server. Making it a lot harder to find the person to even send the DMCA to, let alone start the legal wheels turning, if it were ignored.