That is not because of the tech, more because of the user trying to stay true to the old ways of doing things.
When I want to download torrents I just paste the link to my D-link NAS that downloads the media for me, this can be done via my Android or iOS tablet, and for consumption I can either use my media PC with XBMC to play it, or use DLNA streaming to play it directly on my Samsung TV or on the tablets. That is if I dont download the torrent directly onto my Android Tablet, which is something I sometimes do when I am not at home and just copy it back onto my NAS when I am in WiFi range.
With things like
Ubuntu on Android seen in action
here and being able to code directly on Android with an
IDE as seen
here makes the gap even smaller.
Expect the Window 8 tablets to do more of the same.