That title is editorialized. Cock.li is not an anonymous email server, it's a regularemail service.
Also this creates us cool insight how to do them DOS: let's bring old hdd/sdd drives with random on it, and let them spend their CPU to break it. Sensible recycle for the environment and freedom.
It's not going to work against anybody who has anything really valuable and knows they're a target, but that's not the point.
This kind of publicity is actually beneficial for the officials. More people see what kind of trouble you maybe get into should you start contributing to Tor or other similar projects.
I think it's probably the opposite -- the person in question runs services for 4chan and other "edgy" groups, with servers he runs being used to send violent threats to several schools; if tor, for instance, is only known for piracy, dumb threats, and other unsavory content, it's going to turn people away.