Using a torrent plugin without a debrid service has the usual torrenting issues. In some countries torrents are monitored by copyright holders, so in NA getting letters from the ISP for copyright infringement is an issue. In Germany torrentio is a great way to receive a few hundres to thousands euro fine.

By using a debrid service it's a pretty good experience (if your watching in english, as other languages are often not well represented on public trackers).