You've raised –

• Anna's Archive bearing the server-load ("slurp up their bandwidth", "the traffic costs will inflate dramatically")

• Lawyers demanding a centralised takedown

Both of these are based on the idea of a client-server model. Torrents don't have that model at all. It's a peer-to-peer model as opposed to a client-server model

Can you link me to the part of that article that says that somehow once you put a torrent file on your server, you can never remove it from your server?

"the lack of a central server that could limit bandwidth"... "The BitTorrent protocol can be used to reduce the server and network impact of distributing large files. Rather than downloading a file from a single source server, the BitTorrent protocol allows users to join a "swarm" of hosts to upload and download from each other simultaneously"... "there is no single point of failure as in one way server-client transfers".... "publishers that value BitTorrent as a cheap alternative to a client-server approach".... "to increase availability and to reduce load on their own servers, especially when dealing with larger files"

Happy to explain this more if you're still confused.