Maybe no one answered because it wasn't a question.

Since no one answered: you need to split it up:
Especially if you are a first uploader you will want to ensure that a seedbox can't be tracked backed to u (or if you upload little bits at least a -astrustworthyascanbe- vpn).
The more interesting part is how they can analyze "how data moves through torrent sites", which would mean they are using some kind of MITM information. And that not on demand but 24/7. Not that things like that are new, but they are as far as japans content protection goes. Still since only 1 guy (+3Leeches) has(/have) yet been brought to light looks like more of an act to scare than something to consider if you already take measures.