That is a hell of a lot of trust that people are putting in to download and upload unknown files.
The risks that you download and start spreading malware or worse CSAM. You really don’t want that sitting on your disk.
Admittedly the risks is lower if the list is coming from Annas Archive, but this is still putting a lot of trust in an external list.
Much better off doing this manually, finding the list of what you want to seed and vetting that list yourself.
The torrents are coming directly from Anna's Archive torrents list generator, which suggests their torrents based on how rare their content is. There's currently 177TB of data that is only seeded by 4 computers around the world, which I personally find worrisome.
People seem to be very concerned, but putting aside the legal risks (which I accept - don't use this if you're in one of the ~10 countries it could get you in troubles for), I don't really get it. The idea is to support Anna's Archive. If you do not trust the project, why support it? Levin is meant for people that want to support Anna's Archive, and my assumption was that this implies some kind of trust in their torrents.
Edit: just adding that "finding the list of what you want to seed and vetting that list yourself" is extremely not practical and not won't really help anyone. Torrents work because we're all seeding the same torrents. If I'd seed a torrent of my 5 favorite books and you seed a torrent of your 5 books, our torrents will forever have 1 seeder each. And good luck manually vetting all the files in one AA torrent. I am planning to let people manually add/remove torrents from Levin, but I highly suspect it will be used by very, very few.