This is all true, with a few exceptions. For example, incitement to violence or false allegations that do serious reputational damage. It's not sustainable to allow exactly all speech.
Although I mostly agree, I just wanted to make explicit that nuance.
GP brought up people being jailed for social media posts, but didn't reference any specifically. In the handful of cases I found via a web search, the charges were related to inciting violence.
GP also brought up the Universal Declaration of Human Rights. Article 30 reads:
Nothing in this Declaration may be interpreted as implying for any State, group or person any right to engage in any activity or to perform any act aimed at the destruction of any of the rights and freedoms set forth herein.
When one exercising a freedom restricts another's ability to exercise theirs, it is reasonable to expect courts to get involved to sort it out.
Although I mostly agree, I just wanted to make explicit that nuance.