He seems to be doing a good enough job of getting himself tossed off the air on is own from what I can see.
If they were enemies of free speech then why would they be using it?
What is the essential difference between someone criticizing him and him criticizing others? It's all "freedom of speech" isn't it? You want to silence his critics? Why? At least we still have the freedom to chose what we listen to, read and see. Every media device I have has a power button as a last resort. I still have a choice.