I think pocket and quite the slew of unrelated features disagrees with you. Seems like most browsers are happy to be the everything app.

No Herr officer, I was just trying to download my favorite distros, and I don’t know where all that Metallica/Disney/Nintendo came from.

Why can’t browsers treat torrents as just another protocol for downloads, so that if you haven’t got a default set for torrent out magnet mimetypes, it just downloads it in the included download manager?