But can you download data from regular bittorrent peers using Tribler? And if yes, how does my traffic reach them?

Suppose I want to download a torrent that's only seeded by one person running Deluge. My understanding was that this would involve making a connection to another Tribler user, and that user making the connection to that seeder. That would make every client a sort of exit node for bittorrent traffic, even for torrents they don't download. Is that not how it works?