With the amount of illigal content on the net, CF is not making blog posts every time they stop service. They're doing it in this case because kiwifarms is popular. And now it's causing dozens of posts stirring drama and steering users towards it.

The justifications are also weak, and put CF in a bad light because they believe themselves to be justice. A simple "we don't like what they're doing so we won't service it" is an honest answer.