It doesn't make you anonymous. Torrent protocol wasn't designed with anonymity in mind and there are a million ways you're going to leak your actual IP address.
Tor is a TCP only network.
While this doesn't give you the anonymity you wanted, it will hurt the network for other users.
Same here. Whilst torrent sites themselves are blocked, once you get the magnet link/torrent via a proxy/VPN, there is no issue. I do not think anyone has ever received a cease and desist letter from their ISPs here. But then, I think, this is the case for many countries outside of the developed world.