Some things shouldn't be okay to say. That intolerance actually hurts people, if someone says "the Nazis were right" that really doesn't end up being a victimless crime, America is an example right now where the rhetoric is leading to actual violence towards certain groups. While I think the government regulating it too much is not good I don't see the issue of doing it collectively as individuals.

Edit: just as a final thought, I've been on both sides of this, I've been silenced and I've silenced other people and honestly they both suck. I hold this view with the believe that some middle ground of things not being okay is the only one that works. If someone thinks that a free for all of ideas works well they are welcome to try it on their social media and at their company and I could be convinced if I could see it work at scale. It's really a practical view more than a philosophical one