There's a big difference between fiscal policy and sexual orientation, though.

If you say "taxes are theft" I may disagree with your viewpoint, but I'm not personally attacked by it. If your viewpoint is a challenge to their personal identity, you should probably keep that to yourself.

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

I think you should not discuss politics at work. Unfortunately I agree with you: this will lead to only feelgood (i.e. leftist) politics being talked about.