There's a difference between "freely expressing your ideas" and eg. plotting a vigilante kidnapping.
The former should be protected, the latter should be reported to the police.
A lot of the people who say they want free speech actually have some kind of anarchist fantasy where they can do whatever they want without consequences.
It seems like you care about free speech, not anarchism, so I'm not sure why the blog post offends you so much?
As I understood it, the blog post just makes it clear that "free speech" to them does not mean "lawless place where you can hide from the police".
Nowhere in the blog post does it say that they will only allow content or opinions that they agree with.