When did an appreciation for free speech become the exclusive domain of the Libertarians? I don't want you to be able to unilaterally silence me, therefore I'm a Libertarian?
What are your opinions on community bans, since all your arguments apply equally to those. Let me see you rectify those positions.
Community bans are the domain of a select few individuals who are responsible for maintaining the overall state of the community. If they abuse their power then the community suffers and people should go elsewhere.
Personally, I'd rather a system where one could "subscribe" to specific moderators so that if one goes rogue people could choose to unsubscribe from their moderation actions, that would IMO be the best combination of freedom and control. But I can understand that being rather complicated to implement well and perhaps a little confusing for the users, so I'm okay with the current setup as a compromise.
It being different over here is what makes it not broken over here. The effects that makes Reddit's block system suck so badly are not present here.