it DOES work.
Blocking casual easy piracy is the key. Blocking stuff by making people take weird routes, makes it harder and that is ALL that counts.
Remember that the pirates are using tools (e.g bit torrent clients, and other things) to perpetrate their piracy. The tools are written by clever people, but used by people with little technical clue.
The use of "weird routes" (and whatever else it takes to bypass any blocking attempts) will inevitably be built right into the tools, and entirely automatic, so ultimately, the pirates using the tools won't have to do anything different from what they've done in the past. Most won't even be aware the "weird routes" are involved.
A better plan might involve (where possible) suing pirates, and, most importantly, educating the public.