No offence but apart from HN I wonder what community takes libertarians seriously? In fact from my experience they are mostly non-existent outside of the US, so much that libertarians are a staple of the American culture for me.
Personally I wonder if Reddit can do something about the low quality of their comments in the big subs. All comment sections are full of idiots making bad puns. It's terrible, much much worse than youtube ever was or that twitter currently is.
The fav button was a useful tool back when it meant "fav" as in "bookmark" and not "like". Maybe they should go back to that? I know they've recently added a "bookmark" button as well, but I hope they don't keep it hidden the way it is now.
On the other hand: Twitter does not have to be a debate site. You can surely debate using it, but it's just a website where you can post short messages and follow your friends. They shouldn't screw it just to cater to a certain part of their user base.