I think that is a very slippery argument when it comes to (magnet) links, and the Internet. I can tell you where you can buy drugs or prostitutes in the city where I live. If I do, am I "aiding" you in committing a crime? If a newspaper reports the same thing, are they "facilitating" a crime?
So the argument of "they're not distributing content themselves" is invalid. The argument should be about the legality of file sharing, property and ownership.