The commenter you are quoting is praising free speech. Yes, it is a good thing.
To belabor the point, what's ironic is that in the 1990s it was the right, 'the religious right', that wanted to censor free speech -- such as the speech of rap artists. Now it is the left that attacks free speech and wants to censor rap artists.
Previously it was the church that wanted to censor free speech. Now it is progressives, who 'f------ love science', who want to censor uncomfortable scientific results.
This quote from the article describes the dynamic in the US pretty accurately, in my opinion.
> The conspiracy theories, the lies, the distortions, the overwhelming amount of information, the anger encoded in it — these all serve to create chaos and confusion and make people, even nonpartisans, exhausted, skeptical and cynical about politics. The spewing of falsehoods isn’t meant to win any battle of ideas. Its goal is to prevent the actual battle from being fought, by causing us to simply give up.
If that’s what awaits the future “heights of culture,” if that’s how you think people will ultimately get influence in the future, I don’t think there will be much of a culture left to have lofty opinions about freedom or speech.
And this is a good thing. The commanding heights of culture should be as contestable as possible; this is what makes for an open society.