I think this enables somewhat decentralized image-hosting:

- The torrent metainfo/magnet is derived from the file content for each image doesn't change, so even if one provider (or yourself) goes offline it can be in multiple others

- Since the magnet link doesn't change even if the provider that turns magnet links into HTTP images dies, the clients can just replace it with a different one, the notes do not lose their content

- Each of these steps can be done by different people, with different degrees with redundancy, cost and pricing