How the Threadiverse works today
blocking hides content from blocked users, but doesn't affect their ability to comment
is how Reddit originally worked, and I think that it was by far a better system.
Reddit only adopted the "you can't reply to a comment from someone who has blocked you" system later. What it produced was people getting into fights, adding one more comment, and then blocking the other person so that they'd be unable to respond, so it looked like the other person had conceded the point.
Minor nitpick with your comment: there's a semantic difference between "Libertarian" and "libertarian", and I suspect you want the latter.
Small-l "libertarian" is used to refer to the political ideology.
Big-L "Libertarian" is used to refer to the Libertarian Party.
The same sort of convention also shows up elsewhere, like "democrat" and "Democrat", "republican" and "Republican", etc.